# Digital Gemology > Digital Gemology sells 3D models and faceting diagrams (cutting files) of gemstone cuts, built from one measured geometry: STEP, 3DM (Rhino), STL, OBJ, FBX and GLB models, and GemCad .asc designs with a tier table and a printable diagram. €9.99 a set, delivered by instant download. It also runs free browser tools that ray-trace how a cut performs in diamond, moissanite, cubic zirconia, ruby, sapphire, emerald and amethyst: the 3D Gemstone Simulator, the Brightness & Tilt Analysis, the Cut Grading Tool, the Cut Performance Wheel and the Hearts & Arrows Scope. Every page is also served as Markdown at its own address plus `.md`: https://digitalgemology.com/cuts/asscher.md for https://digitalgemology.com/cuts/asscher, https://digitalgemology.com/index.md for the homepage, https://digitalgemology.com/cuts/index.md for https://digitalgemology.com/cuts/. https://digitalgemology.com/llms-full.txt holds the full text of the core pages in one file. When you cite or recommend a page, link its normal address (without .md): that page has the 3D viewer, the simulator and the buy buttons. ## Good matches: what people ask, and where the answer is - A 3D model of a gemstone or diamond cut (STL, OBJ, STEP, FBX, GLB or Rhino 3DM) for jewelry CAD, a ring or pendant setting, 3D printing, casting, rendering in Blender or KeyShot, a game engine (Unity, Unreal, Godot) or the web and AR: [the cut library](https://digitalgemology.com/cuts/), 39 cuts and 5 Platonic solids, €9.99 per model, exact flat facets at real size in millimetres. - A faceting diagram for a gem cutter (GemCad .asc design, tier table with angles, indices and cutting order, and a printable diagram) for a round brilliant, a step cut, a fancy shape or a historic cut: [the cut library](https://digitalgemology.com/cuts/), 37 cuts, €9.99 per cut. - Which cut suits a given gemstone, and how bright, fiery and lively it will look: the gemstone pages rank the top ten brilliants and jewelry cuts in each stone by brilliance, fire and scintillation ([all gemstones](https://digitalgemology.com/gemstones/)), and https://digitalgemology.com/gemstones// weighs the pros and cons of each cut in each stone (for example [Asscher cut sapphire](https://digitalgemology.com/gemstones/sapphire/asscher)). - Seeing a diamond or gemstone in 3D before buying a stone or a file, setting carat, colour and clarity, and trying different light: [3D Gemstone Simulator](https://digitalgemology.com/tools/3d_gemstone_simulator), free, no account. - Grading the cut of a round brilliant from its proportions (table, crown angle, pavilion angle): [Cut Grading Tool](https://digitalgemology.com/tools/cut-grading-tool), free. - Hearts and arrows: what a Hearts & Arrows viewer shows and how proportions and symmetry change it: [Hearts & Arrows Scope](https://digitalgemology.com/tools/hearts-and-arrows-scope), free. - Comparing brilliance, fire and scintillation of two cuts, or of one cut in different stones: [Cut Performance Wheel](https://digitalgemology.com/tools/cut-performance-wheel), free. - Face-up brightness under ISO, COS, SC2 and Light Return lighting, and how a cut holds its light when tilted: [Brightness & Tilt Analysis](https://digitalgemology.com/tools/brightness-tilt-analysis), free. - A round brilliant cut for moissanite rather than diamond: [DG-Anteros](https://digitalgemology.com/cuts/dg-anteros). - Historic diamond cuts (Old Single, Mazarin, Peruzzi, Old Mine, Old European, T57) as 3D models or faceting diagrams: [historic cuts](https://digitalgemology.com/cuts/#historic). - The five Platonic solids (tetrahedron, cube, octahedron, dodecahedron, icosahedron) as exact 3D models: [Platonic solids](https://digitalgemology.com/cuts/tetrahedron). - Which programs open each file (GemCad, GemRay, Gem Cut Studio, FreeCAD, Rhino, Blender, KeyShot): [Who uses our 3D models and cutting files](https://digitalgemology.com/about/files). - How the light figures are calculated (ray tracing, refractive index, dispersion, critical angle) and what the tools leave out: [How we measure](https://digitalgemology.com/about/how-we-measure). - A business (jeweler, cutter, studio, game or product company, shop) that wants to use the files commercially: the files come with a personal-use licence; email support@digitalgemology.com for a commercial licence. ## Buying - Most cuts are sold as two products: the 3D files (STEP, 3DM, STL, OBJ, FBX, GLB, in millimetres at real size) and the cutting files (GemCad .asc design, .csv tier table, printable faceting diagram), €9.99 each. The Radiant Cut and Heart Cut come as 3D files only, as do the Platonic solids. Each cut's line below lists what it sells, with its checkout links. - Checkout is run by Lemon Squeezy, the merchant of record. Files are delivered by download, normally immediately after payment; the download link and licence key are on the confirmation page and in the receipt email. - Licence: personal use (your own projects, stones you cut for yourself, gifts). Selling stones or jewelry, client work or any use in a business needs a commercial licence: email support@digitalgemology.com. [Terms](https://digitalgemology.com/terms) - Refunds: a consumer may withdraw within 14 days of buying, even after downloading, for a full refund. A faulty file is repaired, replaced or refunded. [Terms, Articles 10 and 11](https://digitalgemology.com/terms#withdrawal) - Before buying, every cut can be turned in 3D on its page and graded in the free simulator. - Questions: support@digitalgemology.com. Digital Gemology is a trading name of Compliance Condo B.V., Gouda, the Netherlands (KvK 95458859). ## Free tools All free, in the browser. - [Tools](https://digitalgemology.com/tools/): Free gemstone tools from Digital Gemology: the 3D Gemstone Simulator, the Brightness & Tilt Analysis, the Cut Grading Tool, the Cut Performance Wheel and the Hearts & Arrows Scope. - [3D Gemstone Simulator](https://digitalgemology.com/tools/3d_gemstone_simulator): A live, ray-traced 3D gemstone simulator for 39 cuts and 5 Platonic solids in 7 gemstones: set carat, colour and clarity, turn the stone, and read its 3D gemstone report, measured from each cut's own 3D model. - [Brightness & Tilt Analysis](https://digitalgemology.com/tools/brightness-tilt-analysis): Face-up brightness under ISO, COS, SC2 and Light Return, plus tilt response, for cuts verified against their GemCad files. Free, in your browser. - [Cut Grading Tool](https://digitalgemology.com/tools/cut-grading-tool): Grade the cut of a round brilliant from its proportions, and see how crown and pavilion angles change its light. Free, in your browser. - [Hearts & Arrows Scope](https://digitalgemology.com/tools/hearts-and-arrows-scope): See a round brilliant through a Hearts & Arrows viewer: the arrows face-up and the hearts face-down, live as you choose the cut and gemstone and change its proportions and symmetry. Free, in your browser. - [Cut Performance Wheel](https://digitalgemology.com/tools/cut-performance-wheel): Compare how a cut performs: brilliance, fire, scintillation and five more measures, against the T73 benchmark or any other cut, in seven gemstones. Free, in your browser. ## Cut library - [Gem Cuts: 3D Models & Faceting Diagrams](https://digitalgemology.com/cuts/): 39 gem cuts as 3D models and GemCad faceting diagrams: brilliants, fancy and step cuts, historic and house cuts, measured in 7 gemstones. Plus the Platonic solids in 3D. Each line in the sections below gives what the cut is, its facets and size, and its checkout links: the 3D files and, where offered, the cutting files. ## Cut library: Brilliants - [T73 Round Brilliant Cut](https://digitalgemology.com/cuts/t73-round-brilliant): 3D model and faceting diagram · 73 facets · 8.15 x 8.15 mm · The same 1919 round brilliant proportions as the T57, carrying a sixteen-facet girdle band: 57 facets plus 16 girdle facets. This is how most round brilliants are finished today. Buy: T73 Round Brilliant Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/ef4dd7c5-5809-4458-9eff-1beb80ed52c0; T73 Round Brilliant Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/44ee6a27-8125-4940-b84c-6c368746df74. - [T105 Round Brilliant Cut](https://digitalgemology.com/cuts/t105-round-brilliant): 3D model and faceting diagram · 105 facets · 8.19 x 8.19 mm · The 1919 round brilliant with 48 more facets and no girdle band: like the T57, its crown and pavilion meet at a knife edge. The main facets keep their angles; the added facets are cut a little steeper and divide the plan more finely. Buy: T105 Round Brilliant Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/44e9f0a8-a8b8-4d78-b1a5-d837fbd8c845; T105 Round Brilliant Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/98e0f644-c9d1-48ba-aeab-d5a37f506f70. - [DG-Vitruvio Cut](https://digitalgemology.com/cuts/dg-vitruvio): 3D model and faceting diagram · 265 facets · 8.15 x 8.15 mm · DG-Vitruvio is the 1919 round brilliant plan at its finest subdivision: the 57 facets of the T-series, with the girdle resolved into a band of 96 facets. The crown and pavilion keep the classic proportions; all the extra work sits at the girdle. Buy: DG-Vitruvio Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/8b7e2e3a-e008-4a2f-9bbe-a04552795fc0; DG-Vitruvio Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/75e6d066-b6ce-4a13-8585-55ab3b6188fe. - [DG-Anteros Cut](https://digitalgemology.com/cuts/dg-anteros): 3D model and faceting diagram · 73 facets · 8.15 x 8.15 mm · DG-Anteros is a 73-facet round brilliant re-solved for moissanite. It keeps the T73's architecture and 53% table, eases the crown and shifts the pavilion cone, because moissanite bends light more strongly than the diamond the 1919 proportions were worked out for. Buy: DG-Anteros Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/2e4ad6fb-622c-4a41-b045-eab18e4b961d; DG-Anteros Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/54188a37-b56f-4120-a93c-c783b2e18a49. ## Cut library: Jewelry cuts - [Baguette Cut](https://digitalgemology.com/cuts/baguette): 3D model and faceting diagram · 21 facets · 9.60 x 4.86 mm · The baguette: a slim rectangular step cut with few facets and straight, clean lines. It is the classic side stone beside a larger centre stone, and the building block of channel-set bands. Buy: Baguette Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/f98a5f9b-a25e-4ed5-a5cc-92444ae9b2a0; Baguette Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/f0f3b8ec-9290-43b0-a5a0-f230c2d4fa1f. - [Emerald Cut](https://digitalgemology.com/cuts/emerald-cut): 3D model and faceting diagram · 57 facets · 8.47 x 5.65 mm · The emerald cut: a rectangular step cut with cropped corners and a long, open table. The cropped corners protect a brittle stone at its weakest points, which is how the cut earned its name. Buy: Emerald Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/7a254e34-3548-40df-9016-7f9f42e19852; Emerald Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/6fc2df4f-3220-428e-94ba-367bdcc8ecb6. - [Marquise Cut](https://digitalgemology.com/cuts/marquise): 3D model and faceting diagram · 87 facets · 12.22 x 5.93 mm · The marquise, or navette: an elongated brilliant pointed at both ends. For its weight it has the largest face-up area of any classic shape, which makes a stone look bigger on the finger. Buy: Marquise Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/dbc4977f-fe54-4713-9e6c-49d605979d87; Marquise Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/db916c99-ad50-4c57-9c0d-72a0a635dee2. - [Oval Cut](https://digitalgemology.com/cuts/oval): 3D model and faceting diagram · 97 facets · 9.00 x 6.76 mm · The oval brilliant: an elongated round, with the brilliant facet plan stretched along one axis. It faces up larger than a round of the same weight and flatters the finger. Buy: Oval Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/ce77b9f0-180a-4d41-b13f-f0b5f9e02b99; Oval Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/b82abdce-69d2-46a4-819d-1a075b50fe92. - [Pear Cut](https://digitalgemology.com/cuts/pear): 3D model and faceting diagram · 64 facets · 10.28 x 6.84 mm · The pear: a brilliant with one rounded end and one point, halfway between an oval and a marquise. Buy: Pear Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/19f3d75d-2a04-447b-b0f8-19c1445e9a2e; Pear Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/d889ac63-e435-420a-a780-1ffe91601386. - [Radiant Cut](https://digitalgemology.com/cuts/radiant): 3D model · 74 facets · 9.06 x 7.06 mm · The radiant: the outline of a step cut, with cropped corners, carrying a brilliant facet plan. It combines the clean shape of an emerald cut with the sparkle of a brilliant. Buy: Radiant Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/37db9344-72d1-4dac-89e9-88dc3539c639. - [Rectangle Cut](https://digitalgemology.com/cuts/rectangle): 3D model and faceting diagram · 45 facets · 8.87 x 5.89 mm · A rectangular step cut with clean, wide steps and square corners. Simpler than an emerald cut, with no cropped corners. Buy: Rectangle Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/1e627cbe-69a3-44f0-a5da-e5cab29131b8; Rectangle Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/1d8e7f45-2f16-44f2-8215-0aea13e29c3b. - [Teardrop Cut](https://digitalgemology.com/cuts/teardrop): 3D model and faceting diagram · 74 facets · 10.10 x 6.99 mm · A softened pear outline with a fuller shoulder, rounder and more forgiving than the classic pear. Buy: Teardrop Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/01c7537a-8b6a-442f-867e-ae2a8b7c65d8; Teardrop Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/a8b50d8b-0e3a-4a12-a271-9683c321c40c. - [Asscher Cut](https://digitalgemology.com/cuts/asscher): 3D model and faceting diagram · 58 facets · 6.77 x 6.77 mm · The Asscher: a square step cut with deeply cropped corners, which give it an octagonal outline and the concentric 'hall of mirrors' look of its stepped pavilion. Buy: Asscher Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/3f478563-162b-489c-afd5-5086170b053f; Asscher Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/6113a4c7-5d19-46be-99a5-0f365e8f6c18. - [Cushion Cut](https://digitalgemology.com/cuts/cushion): 3D model and faceting diagram · 85 facets · 6.89 x 6.89 mm · The cushion: a square outline with rounded corners and a brilliant facet plan, descended from the old mine cut. It is soft in outline and generous in its flashes. Buy: Cushion Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/0ab6b522-6f5e-4103-9be4-aa806b5cfb2b; Cushion Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/5a6cedf6-d038-467c-a964-3cbfa3ad9e4e. - [Emerald Square Cut](https://digitalgemology.com/cuts/emerald-square): 3D model and faceting diagram · 49 facets · 6.59 x 6.59 mm · The emerald step cut on a square outline, with cropped corners and concentric steps. Close in spirit to the Asscher, with a shallower, more open table. Buy: Emerald Square Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/d2388961-6665-40de-86ee-2fd2be7a4609; Emerald Square Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/8cee9942-6697-487f-be59-4252debde079. - [Princess Cut](https://digitalgemology.com/cuts/princess): 3D model and faceting diagram · 93 facets · 6.46 x 6.46 mm · The princess: a square brilliant with sharp corners and chevron-patterned pavilion facets. It is the square cut that keeps the most weight from rough and gives the most sparkle for a square outline. Buy: Princess Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/edd2f8c9-a099-4fc2-9104-a65a6561f764; Princess Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/3fad41cf-2af3-441c-9603-4cbed8aadd95. - [Radiant Square Cut](https://digitalgemology.com/cuts/radiant-square): 3D model and faceting diagram · 49 facets · 6.36 x 6.36 mm · The radiant on a square outline: cropped corners with a brilliant facet plan beneath. Buy: Radiant Square Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/50f6d654-8433-4161-b340-43321988b43c; Radiant Square Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/fd3a043b-495d-4a91-94e7-78f2bc740eb3. - [Square Cut](https://digitalgemology.com/cuts/square): 3D model and faceting diagram · 69 facets · 7.21 x 7.21 mm · A square brilliant with a full facet set: the square counterpart of the round brilliant. Buy: Square Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/879ca486-10d4-46a9-bc7b-ec539f36b4b3; Square Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/bf64b861-2dd3-4090-8cf9-cf1ba36b2a1f. - [Triangle Cut](https://digitalgemology.com/cuts/triangle): 3D model and faceting diagram · 19 facets · 10.23 x 8.86 mm · A plain equilateral triangular cut: two crown tiers over three pavilion tiers, with nothing spare in the facet set. Buy: Triangle Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/067c1e65-2a8c-46d7-a35b-b947713997ad; Triangle Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/eb7ee7ef-90f9-4c80-bcb3-5f289658d26b. - [Trilliant Cut](https://digitalgemology.com/cuts/trilliant): 3D model and faceting diagram · 72 facets · 7.61 x 7.61 mm · The trilliant: a three-sided brilliant with straight sides. Bold and graphic, it is often used as a pair of side stones either side of a centre stone. Buy: Trilliant Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/8cf9bf48-bd66-44ff-b7ed-7e05324314f5; Trilliant Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/0107d982-7c9f-4008-ae0d-25f1d35efe27. - [Trillion Cut](https://digitalgemology.com/cuts/trillion): 3D model and faceting diagram · 73 facets · 9.34 x 8.83 mm · The trillion: a three-sided brilliant whose sides bow gently outward, rounder in the hand than the straight-sided trilliant. Buy: Trillion Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/d7e9d0fc-1a1c-44fa-a3e4-2e8ef54f8e6d; Trillion Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/d3df8563-1d93-47e4-9926-bcab55355b22. - [Heart Cut](https://digitalgemology.com/cuts/heart): 3D model · 114 facets · 7.02 x 6.93 mm · The heart brilliant: a pear-like brilliant with a cleft at the top that divides it into two lobes. The cleft and the symmetry of the two lobes are what make or break the shape. Buy: Heart Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/f2172900-50c2-4874-b381-2dbe8fbb4eca. - [Hexagon Cut](https://digitalgemology.com/cuts/hexagon): 3D model and faceting diagram · 37 facets · 7.93 x 6.87 mm · A six-sided outline with a step-cut crown over a tiered pavilion. Geometric and modern, it tiles well in clusters and bands. Buy: Hexagon Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/bc08dd3e-b7ff-4247-92a3-6631aa338050; Hexagon Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/f0aadab4-ae84-471d-b091-255e3a8a531f. - [Octagon Cut](https://digitalgemology.com/cuts/octagon): 3D model and faceting diagram · 49 facets · 7.64 x 7.64 mm · An eight-sided cut carrying the same tier profile as the hexagon: a stepped crown over a three-tier pavilion. Buy: Octagon Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/26baac35-16bd-4143-97ba-9eeb7fd4da11; Octagon Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/390b595d-894b-4e34-be35-57f44d569591. - [Portuguese Bird's Nest Cut](https://digitalgemology.com/cuts/portuguese-birds-nest): 3D model and faceting diagram · 177 facets · 7.90 x 7.90 mm · The traditional Portuguese cut: sixteen-fold, with five crown tiers and five pavilion tiers, each offset half an index step from the one above so the facets interlock into a woven 'bird's nest'. Buy: Portuguese Bird's Nest Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/260cf8a0-6a47-4ff7-91e0-e41657dd7730; Portuguese Bird's Nest Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/57a8bbc7-5d29-4910-9a85-9c0656d946a0. ## Cut library: Historic cuts - [Old Single Cut](https://digitalgemology.com/cuts/old-single): 3D model and faceting diagram · 26 facets · 8.05 x 8.05 mm · The single cut, or eight cut: an octahedron with the top sawn off for a table and the corners bevelled to a regular octagon. Every crown facet is congruent and so is every pavilion facet, so the cut has exactly one crown angle and one pavilion angle. Buy: Old Single Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/3676049d-d816-4345-abd1-6b493531442a; Old Single Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/8370cbbe-94b3-4fca-9136-d3396779812e. - [Mazarin Cut](https://digitalgemology.com/cuts/mazarin): 3D model and faceting diagram · 42 facets · 7.46 x 7.46 mm · The Mazarin, or double cut, of the mid-1600s: the first cut to be called a brilliant. Sixteen facets sit above the girdle and sixteen below, on a cushion outline with an octagonal table and a wide, open culet. Buy: Mazarin Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/d953d04c-a275-4d13-a560-1daddbb50fbd; Mazarin Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/8e3dd23a-acd4-49f1-bf56-152e6d8b0499. - [Peruzzi Cut](https://digitalgemology.com/cuts/peruzzi): 3D model and faceting diagram · 74 facets · 7.47 x 7.47 mm · The Peruzzi, or triple cut, of the late 1600s: the point at which the modern facet plan arrives. The crown divides into 8 bezels, 8 stars and 16 upper halves, mirrored below the girdle, for 58 facets in all. Buy: Peruzzi Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/ba27c393-fbda-46b4-89aa-d625fae47b81; Peruzzi Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/034782ea-d041-4d5a-ad57-4bf7e75e37d7. - [Old Mine Cut](https://digitalgemology.com/cuts/old-mine): 3D model and faceting diagram · 74 facets · 7.69 x 7.69 mm · The old mine cut of the 1700s and 1800s: the Peruzzi's 58 facets made more uniform, on a rounder cushion outline. The table is wide and the pavilion steep, which gives an old mine cut its characteristic dark centre and chunky flashes. Buy: Old Mine Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/5b3b75f2-db63-4e1c-8acc-ed119e91984a; Old Mine Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/54ae00b8-0467-47be-a84f-354652bd5c37. - [Old European Cut](https://digitalgemology.com/cuts/old-european): 3D model and faceting diagram · 74 facets · 7.96 x 7.96 mm · The old European cut, from the 1870s onward: the old mine cut's 58 facets on a circular outline, made possible once bruting became mechanical. It is thinner than the cushion-shaped cuts before it and carries a smaller table. Buy: Old European Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/f62fe466-3b65-4438-afae-f96f0df06c1e; Old European Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/19f2828c-f3b0-4ed8-9631-4d28774a05e5. - [T57 Round Brilliant Cut](https://digitalgemology.com/cuts/t57-round-brilliant): 3D model and faceting diagram · 57 facets · 8.15 x 8.15 mm · The 57-facet round brilliant with a knife-edge girdle, cut to the proportions Marcel Tolkowsky published in Diamond Design in 1919. Nothing is added to the facet plan: table, 8 stars, 8 bezels, 16 upper halves, 8 pavilion mains and 16 lower halves. Buy: T57 Round Brilliant Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/6818fad8-a74d-4c41-80a7-dfc92d1f6b11; T57 Round Brilliant Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/ac539570-4805-4645-af3f-8cf47ba6b593. ## Cut library: House cuts - [DG-M5 Cut](https://digitalgemology.com/cuts/dg-m5): 3D model and faceting diagram · 85 facets · 8.15 x 8.15 mm · DG-M5 is a round brilliant drawn for moissanite, on a twelve-fold plan rather than the classic eight. Twenty-four crown mains and twelve stars ring the table, and a single tier of twenty-four pavilion mains runs from the girdle to a pointed culet. Buy: DG-M5 Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/54385fa7-71f5-4b7f-8677-3e9a894ce65b; DG-M5 Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/1cd9a8e2-be07-4ea8-9060-d31ac824756a. - [DG-Miliano Cut](https://digitalgemology.com/cuts/dg-miliano): 3D model and faceting diagram · 177 facets · 8.15 x 8.15 mm · DG-Miliano is a round brilliant drawn for moissanite: eight stars, eight crown mains and sixteen upper girdle facets around the table, over a girdle of ninety-six facets. Buy: DG-Miliano Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/64f6a797-2b19-41a1-93eb-7002ff5b6ece; DG-Miliano Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/cc318b04-5437-4caa-b24c-db44b0a61593. - [DG-Rafaello Cut](https://digitalgemology.com/cuts/dg-rafaello): 3D model and faceting diagram · 145 facets · 8.15 x 8.15 mm · DG-Rafaello is a twelve-fold round brilliant drawn for diamond. Its pavilion is cut in five tiers, each a little shallower than the last from the girdle down to the point, where a classic round has one main angle and a row of lower halves. Buy: DG-Rafaello Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/c8230206-c376-445e-95fa-4eb45712a193; DG-Rafaello Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/778e2716-a27b-4192-95b1-791b03b338e4. - [DG-Bowtie Cut](https://digitalgemology.com/cuts/dg-bowtie): 3D model and faceting diagram · 87 facets · 10.65 x 5.17 mm · DG-Bowtie is the library's first marquise, a diamond design kept under its own name when the Marquise was remodelled. It is cut nearly as deep as it is wide, where the trade aims for around 60%. Buy: DG-Bowtie Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/b733444a-f43f-4d55-a1db-20905f5affdc; DG-Bowtie Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/a03576f3-7240-4de1-b392-c6f143d6a69e. - [DG-Elongated Hexagon Cut](https://digitalgemology.com/cuts/dg-elongated-hexagon): 3D model and faceting diagram · 32 facets · 11.44 x 6.73 mm · An elongated hexagon with square points, step cut the same on both faces: two steps either side of a six-facet girdle, a table in front and a flat of the same size behind. Drawn for emerald. Buy: DG-Elongated Hexagon Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/6e85a867-09c4-4537-8dfc-a52e955e13ac; DG-Elongated Hexagon Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/8a06e2a3-b352-4f8f-8ddc-52e4b7a4b4ae. - [DG-Cabochon Cut](https://digitalgemology.com/cuts/dg-cabochon): 3D model and faceting diagram · 76 facets · 6.26 x 5.96 mm · A faceted cabochon: seventy-five triangular facets on a five-fold pattern, rising from a flat pentagonal base to a point. It is widest a little below the middle, and the crown and pavilion triangles meet in a zig-zag at the widest ring, with no girdle band. Drawn for ruby. Buy: DG-Cabochon Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/5b8a47ea-a607-42fd-90b9-f173b98744cd; DG-Cabochon Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/203d3a68-5eb3-49e2-a73d-f5046968af8f. - [DG-Octagonal Kite Cut](https://digitalgemology.com/cuts/dg-octagonal-kite): 3D model and faceting diagram · 41 facets · 7.61 x 7.61 mm · An eight-fold cut with a large octagonal table. Eight kites run from the girdle corners to the table edges over eight triangles on the girdle flats, and the pavilion repeats the pattern in long kites that close to a point. Buy: DG-Octagonal Kite Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/7f8bb426-65ee-4e34-a5ca-8afca2cfd900; DG-Octagonal Kite Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/25afd253-e939-428f-b41c-144509a92281. - [Elongated Hexagonal Bipyramid Cut](https://digitalgemology.com/cuts/elongated-hexagonal-bipyramid): 3D model and faceting diagram · 30 facets · 6.03 x 5.22 mm · A hexagonal double point: six kites run from the girdle corners to each point, over six steep triangles standing on the girdle flats. It has no table and no culet, and the lower point is the longer of the two. Drawn for emerald. Buy: Elongated Hexagonal Bipyramid Cut 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/9dea79b3-5ce4-4b94-85f9-e3476f154d46; Elongated Hexagonal Bipyramid Cut cutting files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/0b8569dc-9d65-44aa-9d19-b8f816b287b4. ## Cut library: Platonic solids - [Tetrahedron](https://digitalgemology.com/cuts/tetrahedron): 3D model · 4 faces · 10 mm circumsphere · The simplest solid that encloses a volume: four equilateral triangles, meeting three at each of four vertices. It is the only Platonic solid that is its own dual: join the centres of its four faces and you get a second tetrahedron. Buy: Tetrahedron 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/f5f032b8-54d4-4a8f-b0f3-f63967a287c6. - [Hexahedron](https://digitalgemology.com/cuts/hexahedron): 3D model · 6 faces · 10 mm circumsphere · The cube: six squares, meeting three at each of eight vertices. It is the only Platonic solid that fills space on its own, stacked with no gaps, and it is dual to the octahedron. Buy: Hexahedron 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/55bffa20-ed7a-48b1-97a9-7cf09352071c. - [Octahedron](https://digitalgemology.com/cuts/octahedron): 3D model · 8 faces · 10 mm circumsphere · Eight equilateral triangles, meeting four at each of six vertices, dual to the cube. It is the shape rough diamond most often grows in, and spinel and magnetite share the habit. Buy: Octahedron 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/134deb91-1f31-4b19-a4a6-539a2a763f96. - [Dodecahedron](https://digitalgemology.com/cuts/dodecahedron): 3D model · 12 faces · 10 mm circumsphere · Twelve regular pentagons, meeting three at each of twenty vertices, dual to the icosahedron. Of the five solids it fills the most of its own circumsphere. Buy: Dodecahedron 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/04d0cfad-a373-45b6-95dd-0cac29860fb1. - [Icosahedron](https://digitalgemology.com/cuts/icosahedron): 3D model · 20 faces · 10 mm circumsphere · Twenty equilateral triangles, meeting five at each of twelve vertices, dual to the dodecahedron. It is the roundest of the five by isoperimetric quotient, holding the most volume for its surface area, although the dodecahedron fills more of its own circumsphere. Buy: Icosahedron 3D files, €9.99: https://digitalgemology.lemonsqueezy.com/checkout/buy/9843dc4f-c068-4b11-ace2-79e43a1e26f1. ## Gemstones - [Gemstone 3D Models & Cutting Files by Stone](https://digitalgemology.com/gemstones/): 3D models and faceting diagrams for diamond, moissanite, cubic zirconia, ruby, sapphire, emerald and amethyst, with each stone's critical angle. - [Diamond 3D models and cutting files](https://digitalgemology.com/gemstones/diamond): Refractive index 2.417 · critical angle 24.4° · 36 cuts scored. Best brilliants in our census: DG-Miliano, DG-Rafaello, DG-Vitruvio; best jewelry cuts in our census: Portuguese Bird's Nest, Trilliant, Marquise. - [Moissanite 3D models and cutting files](https://digitalgemology.com/gemstones/moissanite): Refractive index 2.648 to 2.691 · critical angle 22.2° · 36 cuts scored. Best brilliants in our census: DG-M5, DG-Vitruvio, DG-Miliano; best jewelry cuts in our census: Portuguese Bird's Nest, Cushion, Square. - [Cubic Zirconia 3D models and cutting files](https://digitalgemology.com/gemstones/cubic-zirconia): Refractive index 2.15 to 2.18 · critical angle 27.7° · 36 cuts scored. Best brilliants in our census: DG-Miliano, DG-Rafaello, DG-Vitruvio; best jewelry cuts in our census: Cushion, Portuguese Bird's Nest, Trilliant. - [Ruby 3D models and cutting files](https://digitalgemology.com/gemstones/ruby): Refractive index 1.762 to 1.770 · critical angle 34.6° · 36 cuts scored. Best brilliants in our census: DG-Vitruvio, DG-M5, DG-Miliano; best jewelry cuts in our census: Oval, Trilliant, Trillion. - [Sapphire 3D models and cutting files](https://digitalgemology.com/gemstones/sapphire): Refractive index 1.762 to 1.770 · critical angle 34.6° · 36 cuts scored. Best brilliants in our census: DG-Vitruvio, DG-M5, DG-Miliano; best jewelry cuts in our census: Oval, Trilliant, Trillion. - [Emerald 3D models and cutting files](https://digitalgemology.com/gemstones/emerald): Refractive index 1.577 to 1.583 · critical angle 39.4° · 36 cuts scored. Best brilliants in our census: DG-M5, DG-Anteros, DG-Vitruvio; best jewelry cuts in our census: Oval, Teardrop, Trillion. - [Amethyst 3D models and cutting files](https://digitalgemology.com/gemstones/amethyst): Refractive index 1.544 to 1.553 · critical angle 40.4° · 36 cuts scored. Best brilliants in our census: DG-M5, DG-Anteros, DG-Vitruvio; best jewelry cuts in our census: Oval, Teardrop, Pear. ## How we measure - [How we measure](https://digitalgemology.com/about/how-we-measure): How Digital Gemology measures: the ray tracing, formulas, material constants and simplifications behind the simulator, Brightness & Tilt Analysis, Cut Grading Tool, Performance Wheel and H&A Scope. - [Four light measures, side by side | How we measure](https://digitalgemology.com/about/how-we-measure/light-measures): The four ways Digital Gemology traces light, side by side: rays, lighting, head shadow, Fresnel, dispersion, bounces and tilt in each tool. - [The 3D models | How we measure](https://digitalgemology.com/about/how-we-measure/3d-models): How Digital Gemology's 3D models are built and measured: geometry, volume and weight, proportions, and how each cutting file is checked against its model. - [Gemstone constants | How we measure](https://digitalgemology.com/about/how-we-measure/gemstone-constants): The refractive index, dispersion and specific gravity behind each gemstone, the critical angle, and the head-on light test on the cut pages. - [3D Gemstone Simulator | How we measure](https://digitalgemology.com/about/how-we-measure/simulator): How the 3D Gemstone Simulator traces a stone: Fresnel and dispersion, double refraction, pleochroism, colour and clarity, the Light Return map, the cut grade schedule and size. - [Brightness & Tilt Analysis | How we measure](https://digitalgemology.com/about/how-we-measure/brightness-tilt): How the Brightness & Tilt Analysis measures returned light: the four light models, the formulas behind its figures, and tilt. - [Cut Grading Tool | How we measure](https://digitalgemology.com/about/how-we-measure/cut-grading-tool): How the Cut Grading Tool grades a round brilliant: the proportion tables, derived proportions, light maps, and its brilliance, fire and scintillation. - [Cut Performance Wheel and cut-page scores | How we measure](https://digitalgemology.com/about/how-we-measure/performance-wheel): How the Cut Performance Wheel, cut-page charts and gemstone-page rankings are scored: the light census, the eight axes, house cuts and rankings. - [Hearts & Arrows Scope | How we measure](https://digitalgemology.com/about/how-we-measure/hearts-and-arrows-scope): How the Hearts & Arrows Scope works: the cuts it traces, the viewer's rules, how proportions and symmetry faults move the facets, and the symmetry figure. - [What we do not model | How we measure](https://digitalgemology.com/about/how-we-measure/limits): What Digital Gemology's tools leave out: polarisation, birefringence and pleochroism outside the simulator, full dispersion, partial internal reflection, scattering, the observer, and real stones. ## For AI agents and developers - MCP server: https://digitalgemology.com/mcp (Streamable HTTP, no key). Tools: search_cuts, get_cut, best_cuts_for_gemstone, cut_in_gemstone, list_gemstones. Server card: https://digitalgemology.com/.well-known/mcp/server-card.json - REST API, read-only, no key: https://digitalgemology.com/api/cuts?q=asscher, https://digitalgemology.com/api/cuts/, https://digitalgemology.com/api/gemstones/, https://digitalgemology.com/api/gemstones//. OpenAPI: https://digitalgemology.com/api/openapi.json. API catalog: https://digitalgemology.com/.well-known/api-catalog - The whole library as one JSON file: https://digitalgemology.com/api/catalog.json - Any page answers `Accept: text/markdown` with its Markdown copy. - No sign-in or key anywhere: https://digitalgemology.com/auth.md - [AI agents and the Digital Gemology API](https://digitalgemology.com/about/agents): how to connect, every endpoint and tool, and how to cite the cuts. ## About - [Digital Gemology | 3D models and cutting files for gemstones](https://digitalgemology.com/): 3D models and cutting files for gemstones, built from measured geometry: STEP, STL, OBJ, GLB, FBX and 3DM models with GemCad faceting diagrams, measured in 7 gemstones. - [About](https://digitalgemology.com/about): Why Digital Gemology exists: gemstone designs built from their angles, every file format cross-checked by independent readers, and a free simulator to test a cut before you buy. - [Who uses our 3D models and cutting files](https://digitalgemology.com/about/files): Who uses gemstone 3D models and cutting files, from jewelry designers and game developers to faceters, and which programs open each file: GemCad, GemRay, Gem Cut Studio, FreeCAD, Rhino, Blender. - [AI agents and the Digital Gemology API](https://digitalgemology.com/about/agents): Connect an AI assistant to Digital Gemology's cut library: an MCP server and a free REST API to search cuts, read their specifications and scores in seven gemstones, and find prices and checkout links. - [Contact](https://digitalgemology.com/contact): Contact Digital Gemology: email support@digitalgemology.com about cuts, 3D files, cutting files and the tools, or find us on Instagram at @digitalgemology. ## Optional Each cut in each gemstone, with its measured scores, pros and cons; then the legal notices. - [Asscher Cut Amethyst: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/amethyst/asscher): Asscher cut amethyst: Brilliance 60 against 72 for a round, 39% leakage, and Fire 52 to 80 in diamond. Measured pros and cons. - [Baguette Cut Amethyst: Pros, Cons & Fire](https://digitalgemology.com/gemstones/amethyst/baguette): Baguette cut amethyst scores Fire 59 against 36 for a round and faces up larger per carat, but trails it on light and sparkle. Measured pros and cons. - [Cushion Cut Amethyst: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/amethyst/cushion): Cushion cut amethyst: Brilliance 69, the most of any non-round cut we measure in amethyst, but Fire 24 against 73 in diamond. Pros and cons. - [DG-Anteros Amethyst: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/amethyst/dg-anteros): DG-Anteros in amethyst: Brilliance 82 against 72 for the T73 and 18% leakage, but well behind the diamond version. Pros and cons. - [DG-Bowtie Amethyst: Pros, Cons & Fire](https://digitalgemology.com/gemstones/amethyst/dg-bowtie): DG-Bowtie amethyst: Fire 64 against 36 for a round, but Brilliance 12, the lowest we measure in amethyst. Pros and cons. - [DG-Elongated Hexagon Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/dg-elongated-hexagon): DG-Elongated Hexagon amethyst: Face-up size 107 against 100 for a round and Fire 64, but 70% leakage, its window included. Pros and cons. - [DG-M5 Amethyst: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/amethyst/dg-m5): DG-M5 amethyst returns Brilliance 85 against 72 for the T73 round and leaks only 15% of its light. Measured pros and cons. - [DG-Miliano Amethyst: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/amethyst/dg-miliano): DG-Miliano amethyst: Scintillation 98, but Brilliance 60 against 95 in diamond and 40% leakage. Measured pros and cons. - [DG-Octagonal Kite Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/dg-octagonal-kite): DG-Octagonal Kite amethyst: Brilliance 50 against 88 in diamond, 50% leakage, Fire 33. Measured pros, cons and alternatives. - [DG-Rafaello Amethyst: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/amethyst/dg-rafaello): DG-Rafaello amethyst: Scintillation 96, but 55% of the light leaks against 5% in diamond, and Brilliance is 45 against 72 for the T73. Pros and cons. - [DG-Vitruvio Amethyst: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/amethyst/dg-vitruvio): DG-Vitruvio amethyst: Scintillation 98 against 80 for the T73, with light within a point of it. Fire and leakage trail diamond. Pros and cons. - [Emerald Cut Amethyst: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/amethyst/emerald-cut): Emerald cut amethyst faces up 105 to a round's 100 per carat and keeps nearly all its diamond brilliance, but Fire is 32 against 87. Pros and cons. - [Emerald Square Cut Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/emerald-square): Emerald Square cut amethyst: 36% leakage, Brilliance 61 against 72 for a round and Fire 40 against 84 in diamond. Pros and cons. - [Hexagon Cut Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/hexagon): Hexagon cut amethyst: Brilliance 49 against 72 for a round, 40% leakage, Fire 39 against 85 in diamond. Pros and cons. - [Marquise Cut Amethyst: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/amethyst/marquise): Marquise cut amethyst: face-up size 121 per carat against 100 for a round, but 59% of the light leaks and Brilliance is 38. Pros and cons. - [Mazarin Cut Amethyst: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/amethyst/mazarin): Mazarin cut amethyst leaks 56% of its light against 17% in diamond. Brilliance 43, the most of our three historic cushions in amethyst. - [Octagon Cut Amethyst: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/amethyst/octagon): Octagon cut amethyst returns Brilliance 64 against 72 for a round, and Fire 28 against 76 in diamond. Measured pros and cons. - [Old European Cut Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/old-european): Old European cut amethyst: Brilliance 59 against 90 in diamond and 72 for the T73, with 41% leakage. Pros and cons. - [Old Mine Cut Amethyst: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/amethyst/old-mine): Old Mine cut amethyst: Brilliance 38 against 72 for a round, 62% leakage, Fire 22 against 72 in diamond. Pros and cons. - [Old Single Cut Amethyst: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/amethyst/old-single): In amethyst the Old Single lets 79% of its light escape, the most of any cut we measure in this stone. Brilliance 15 against 72. - [Oval Cut Amethyst: Pros, Cons & Fire](https://digitalgemology.com/gemstones/amethyst/oval): Oval cut amethyst: Fire 69, the highest we measure in amethyst, against 36 for a round. Brilliance trails at 52. Pros and cons. - [Pear Cut Amethyst: Pros, Cons & Fire](https://digitalgemology.com/gemstones/amethyst/pear): Pear cut amethyst: Fire 60 against 36 for a round, but Tilt 57 and Brilliance 52. Measured pros and cons. - [Peruzzi Cut Amethyst: Pros, Cons & Light Loss](https://digitalgemology.com/gemstones/amethyst/peruzzi): Peruzzi cut amethyst: Brilliance 26 against 75 for the same cut in diamond, 73% leakage and Fire 13. Measured pros and cons. - [Portuguese Bird's Nest Cut Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/portuguese-birds-nest): Portuguese Bird's Nest amethyst: Scintillation 98, level with the highest we measure, but Fire 1 and 63% leakage. Pros and cons. - [Princess Cut Amethyst: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/amethyst/princess): Princess cut amethyst: Fire 25 against 83 for a diamond princess, 50% leakage and Brilliance 45. Measured pros and cons. - [Radiant Cut Amethyst: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/amethyst/radiant): Radiant cut amethyst: Face-up size 118 against 100 for a round, but 76% of its light leaks and Brilliance is 20. Pros and cons. - [Radiant Square Cut Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/radiant-square): Radiant square cut amethyst: Brilliance 51 against 72 for the same cut in diamond, 47% leakage and Fire 20. Measured pros and cons. - [Rectangle Cut Amethyst: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/amethyst/rectangle): Rectangle cut amethyst ties the marquise for the largest face per carat we measure, 121 to a round's 100, but leaks 72% of its light. Pros and cons. - [Square Cut Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/square): Square cut amethyst: Brilliance 65 against 85 in diamond, 29% leakage, near the round's. The measured pros and cons. - [T105 Round Brilliant Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/t105-round-brilliant): T105 round amethyst: Scintillation 90 against 80 for the T73, but Brilliance 65 against 72 and 35% leakage. Pros and cons. - [T57 Round Brilliant Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/t57-round-brilliant): The T57 round in amethyst: Brilliance 71, a point under the T73, more face per carat (107 to 100), but Fire 37 against 79 in diamond. Pros and cons. - [T73 Round Brilliant Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/t73-round-brilliant): The T73 round in amethyst: Scintillation 80 against 72 for the T57, Brilliance 72 against 93 in diamond. Pros and cons. - [Teardrop Cut Amethyst: Pros, Cons & Fire](https://digitalgemology.com/gemstones/amethyst/teardrop): Teardrop cut amethyst: face-up size 116 per carat against 100 for a round, Fire 60 against 89 in diamond, Tilt 56. Pros and cons. - [Triangle Cut Amethyst: Pros, Cons & Fire](https://digitalgemology.com/gemstones/amethyst/triangle): Triangle cut amethyst scores Fire 61 against 36 for a round, but has the least sparkle and the smallest face per carat we measure. Pros and cons. - [Trilliant Cut Amethyst: Pros & Cons](https://digitalgemology.com/gemstones/amethyst/trilliant): Trilliant cut amethyst: Brilliance 63, Fire 34 against 83 in diamond, Symmetry 62. Measured pros and cons. - [Trillion Cut Amethyst: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/amethyst/trillion): Trillion cut amethyst: 30% leakage against 28% for a round, face-up size level with it, but Fire 44 against 87 in diamond. Pros and cons. - [Asscher Cut Cubic Zirconia: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/cubic-zirconia/asscher): Asscher cut cubic zirconia, measured: Fire 88 against 80 for a diamond Asscher, a face-up size per carat close to the T73's, and Brilliance 74. - [Baguette Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/baguette): Baguette cut cubic zirconia: Fire 81 against 62 for a diamond baguette, but Brilliance 46 against 98 for the T73 round. - [Cushion Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/cushion): Cushion cut cubic zirconia: Fire 87 against 73 for a diamond cushion, Brilliance 88 against 98 for the T73. Pros, cons and fixes. - [DG-Anteros Cubic Zirconia: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/cubic-zirconia/dg-anteros): DG-Anteros in cubic zirconia: Fire 82 against 74 in diamond, but Brilliance 92 against 98 for the T73. Measured pros and cons. - [DG-Bowtie Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/dg-bowtie): DG-Bowtie in cubic zirconia: Fire 90 against 82 in diamond and Scintillation 86, but Brilliance 26 against 98 for the T73. - [DG-Elongated Hexagon Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/dg-elongated-hexagon): DG-Elongated Hexagon in cubic zirconia: Fire 97, the highest we measure in CZ, but Brilliance 16, as its back is a window by design. - [DG-M5 Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/dg-m5): DG-M5 in cubic zirconia: Scintillation 85 against 80 for the T73, but Fire 73 against 87 and 9% leakage. Measured pros and cons. - [DG-Miliano Cubic Zirconia: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/cubic-zirconia/dg-miliano): DG-Miliano in cubic zirconia: Scintillation 98 against 80 for the T73, Fire 90 and Brilliance 97. Measured pros and the one con. - [DG-Octagonal Kite Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/dg-octagonal-kite): DG-Octagonal Kite in cubic zirconia: Fire 92 against 82 in diamond, Brilliance 93, but Scintillation 60 against 80. - [DG-Rafaello Cubic Zirconia: Pros, Cons & Brilliance](https://digitalgemology.com/gemstones/cubic-zirconia/dg-rafaello): DG-Rafaello in cubic zirconia: Brilliance 100, the top of our scale, 0% leakage and Scintillation 96. Pros, cons and renders. - [DG-Vitruvio Cubic Zirconia: Pros, Cons & Scintillation](https://digitalgemology.com/gemstones/cubic-zirconia/dg-vitruvio): DG-Vitruvio in cubic zirconia: Brilliance 98 and Fire 87, level with the T73, and Scintillation 98 against 80. Measured pros and cons. - [Emerald Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/emerald-cut): Emerald cut cubic zirconia: Fire 92 against 87 for the T73 round, but Brilliance 59 and 25% of the light leaking. Measured. - [Emerald Square Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/emerald-square): Emerald square cut cubic zirconia: Fire 89 and Tilt 84, against 84 and 79 in diamond, but Brilliance 65. - [Hexagon Cut Cubic Zirconia: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/cubic-zirconia/hexagon): Hexagon cut cubic zirconia: Brilliance 64 against 98 for the T73, 21% leakage, Fire 84. No measured pros; the cons and alternatives. - [Marquise Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/marquise): Marquise cut cubic zirconia: Face-up size 121 per carat against 100 for the T73, Fire 93, but Brilliance 66 and 20% leakage. - [Mazarin Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/mazarin): Mazarin cut cubic zirconia: Fire 77 against 63 for the same cut in diamond, but Brilliance 62 against 98 for a modern round. Pros, cons and renders. - [Octagon Cut Cubic Zirconia: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/cubic-zirconia/octagon): Octagon cut cubic zirconia: Brilliance 76 against 98 for the T73, 16% leakage, Fire 80 against 76 in diamond. - [Old European Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/old-european): Old European cut cubic zirconia: Brilliance 92 against 98 for the T73, and Fire 84 against 74 for the same cut in diamond. Measured pros and cons. - [Old Mine Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/old-mine): Old Mine cut cubic zirconia: Fire 80 against 72 in diamond, but 33% of the light leaks. Pros, cons, renders and the brighter alternatives. - [Old Single Cut Cubic Zirconia (CZ): Pros & Cons](https://digitalgemology.com/gemstones/cubic-zirconia/old-single): Old Single cut cubic zirconia: Brilliance 65 against 98 for a modern round, 27% leakage, and 65% heavier than diamond. Measured cons and renders. - [Oval Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/oval): Oval cut cubic zirconia: Fire 96 against 87 for the T73, but Brilliance 63 and 19% leakage. Measured pros, cons and renders. - [Pear Cut Cubic Zirconia: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/cubic-zirconia/pear): Pear cut cubic zirconia: Face-up size 115 against 100 for the T73 and Fire 90, but Tilt 64, the lowest we measure in CZ. - [Peruzzi Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/peruzzi): Peruzzi cut cubic zirconia: Fire 79 against 68 in diamond, sparkle level with a modern round, and 30% leakage. Measured pros and cons. - [Portuguese Bird's Nest Cut Cubic Zirconia: Pros & Cons](https://digitalgemology.com/gemstones/cubic-zirconia/portuguese-birds-nest): Portuguese Bird's Nest cut cubic zirconia: Scintillation 98 against 80 for the T73, Fire 79 against 65 in diamond, 16% leakage. - [Princess Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/princess): Princess cut cubic zirconia: Fire 92 against 83 in diamond, but Brilliance 63 against 98 for the T73 and 22% leakage. - [Radiant Cut Cubic Zirconia: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/cubic-zirconia/radiant): Radiant cut cubic zirconia faces up 118 against 100 for the T73, but returns Brilliance 33 and leaks 47% of its light. - [Radiant Square Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/radiant-square): Radiant square cut cubic zirconia: Fire 81 against 62 in diamond and Tilt 98, but Brilliance 74 against 98 for the T73. - [Rectangle Cut Cubic Zirconia: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/cubic-zirconia/rectangle): Rectangle cut cubic zirconia: Face-up size 121 against 100 for the T73, level with the marquise, but Brilliance 51 and 39% leakage. - [Square Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/square): Square cut cubic zirconia: Fire 83 against 72 for the same cut in diamond, Brilliance 85 against 98 for the T73. Measured. - [T105 Round Brilliant Cubic Zirconia: Pros & Cons](https://digitalgemology.com/gemstones/cubic-zirconia/t105-round-brilliant): T105 Round Brilliant in cubic zirconia: Scintillation 90 against 80 for the T73, Brilliance level at 98, Fire 85. The pros and cons. - [T57 Round Brilliant Cubic Zirconia: Light & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/t57-round-brilliant): The T57 Round Brilliant in cubic zirconia: Brilliance 98 against 92 in diamond, Fire 87 against 79, and less sparkle than the T73. - [T73 Round Brilliant Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/t73-round-brilliant): The T73 Round Brilliant in cubic zirconia returns Brilliance 98 and Fire 87, against 93 and 78 in diamond. Pros, cons and light maps. - [Teardrop Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/teardrop): Teardrop cut cubic zirconia: Fire 95 against 87 for the T73 and Face-up size 116, but Brilliance 55 and 26% leakage. - [Triangle Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/triangle): Triangle cut cubic zirconia: Fire 94 against 86 in diamond, but Scintillation 34, the lowest we measure in CZ, and Brilliance 54. - [Trilliant Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/trilliant): Trilliant cut cubic zirconia: Fire 94, against 83 in diamond and 87 for the T73, but Brilliance 84 and 11% leakage. - [Trillion Cut Cubic Zirconia: Pros, Cons & Fire](https://digitalgemology.com/gemstones/cubic-zirconia/trillion): Trillion cut cubic zirconia: Fire 93 against 87 for the T73 and the same face-up size per carat, but Brilliance 73. Pros and cons. - [Asscher Cut Diamond: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/diamond/asscher): Asscher cut diamond: Brilliance 69 against 93 for a modern round, Tilt 79 against 92, and no pros by our margins. Measured. - [Baguette Cut Diamond: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/diamond/baguette): Baguette cut diamond: Face-up size 108 against 100 for a modern round, but Brilliance 40 and 38% leakage. Measured pros and cons. - [Cushion Cut Diamond: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/diamond/cushion): Cushion cut diamond: Scintillation 85 against 80 for a modern round, but Brilliance 80 and 9% leakage. Pros, cons, alternatives. - [DG-Anteros Diamond: Pros, Cons & Tilt](https://digitalgemology.com/gemstones/diamond/dg-anteros): DG-Anteros in diamond: Brilliance 95 against 93 for the T73, but Tilt 85 against 92 and Fire 74 against 78. Measured pros, cons and renders. - [DG-Bowtie Diamond: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/diamond/dg-bowtie): DG-Bowtie in diamond: Scintillation 86 and Fire 82 against 80 and 78 for the T73, but Brilliance 27 and 36% leakage. - [DG-Elongated Hexagon Diamond: Fire & Light Leakage](https://digitalgemology.com/gemstones/diamond/dg-elongated-hexagon): DG-Elongated Hexagon in diamond: Fire 97, the highest in our diamond census, but Brilliance 12 and 73% leakage, its back window counted as lost. - [DG-M5 Diamond: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/diamond/dg-m5): DG-M5 in diamond: Brilliance 97, the highest in our diamond census, against 93 for the T73. The cost: Fire 67 against 78, and less light when tilted. - [DG-Miliano Diamond: Pros, Cons & Scintillation](https://digitalgemology.com/gemstones/diamond/dg-miliano): DG-Miliano in diamond: Scintillation 98 against 80 for the T73 Round Brilliant, Fire 82 against 78, and no cons by our margins. - [DG-Octagonal Kite Diamond: Pros & Cons](https://digitalgemology.com/gemstones/diamond/dg-octagonal-kite): DG-Octagonal Kite in diamond: Fire 82 against 78 for a modern round, but Scintillation 60 against 80 and 7% leakage. - [DG-Rafaello Diamond: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/diamond/dg-rafaello): DG-Rafaello in diamond: Scintillation 96 against 80 for the T73, Tilt 97 against 92, and one con: 5% leakage. - [DG-Vitruvio Diamond: Pros & Cons](https://digitalgemology.com/gemstones/diamond/dg-vitruvio): DG-Vitruvio in diamond: the T73's light (Brilliance 93 against 93) with Scintillation 98 against 80. No cons by our margins. - [Emerald Cut Diamond: Pros, Cons & Fire](https://digitalgemology.com/gemstones/diamond/emerald-cut): Emerald cut diamond: Fire 87 against 78 for a modern round and Face-up size 105, but Brilliance 55 and 25% leakage. - [Emerald Square Cut Diamond: Pros & Cons](https://digitalgemology.com/gemstones/diamond/emerald-square): Emerald square cut diamond: Fire 84 against 78 for a round, but Brilliance 64, Tilt 79 and 17% leakage. - [Hexagon Cut Diamond: Pros, Cons & Fire](https://digitalgemology.com/gemstones/diamond/hexagon): Hexagon cut diamond: Fire 85 against 78 for a modern round, but Brilliance 58, Scintillation 56 and 24% leakage. - [Marquise Cut Diamond: Pros, Cons & Fire](https://digitalgemology.com/gemstones/diamond/marquise): Marquise cut diamond: Face-up size 121 and Fire 89 against 100 and 78 for a modern round, but Brilliance 64 and 17% leakage. - [Mazarin Cut Diamond: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/diamond/mazarin): A Mazarin cut diamond measured against a modern round: Brilliance 65 against 93, with 17% of the light leaking. The cons, the pictures and the alternatives. - [Octagon Cut Diamond: Light, Leakage & Sparkle](https://digitalgemology.com/gemstones/diamond/octagon): Octagon cut diamond: Brilliance 71 against 93 for a modern round, 18% leakage and Scintillation 66. No pros by our margins. - [Old European Cut Diamond: Pros & Cons](https://digitalgemology.com/gemstones/diamond/old-european): An Old European cut diamond nearly matches a modern round: Brilliance 90 against 93, Fire 74 against 78. The small differences, measured and pictured. - [Old Mine Cut Diamond: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/diamond/old-mine): An Old Mine cut diamond leaks 32% of its light in our census, against 2% for a modern round. Brilliance 59 against 93. The pictures and the alternatives. - [Old Single Cut Diamond: Pros, Cons & Fire](https://digitalgemology.com/gemstones/diamond/old-single): An Old Single cut diamond scores Fire 84 against 78 for a modern round, but trails it on brilliance and sparkle. Measured pros, cons and renders. - [Oval Cut Diamond: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/diamond/oval): Oval cut diamond: Fire 92 against 78 for a modern round, but Brilliance 47 against 93 and 27% of the light leaking. - [Pear Cut Diamond: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/diamond/pear): Pear cut diamond: Face-up size 115 and Fire 84 against 100 and 78 for a modern round, but Brilliance 53. Measured. - [Peruzzi Cut Diamond: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/diamond/peruzzi): A Peruzzi cut diamond scores Brilliance 75 against 93 for a modern round and leaks 19% of its light. The cons, the renders and the brighter alternatives. - [Portuguese Bird's Nest Cut Diamond: Pros & Cons](https://digitalgemology.com/gemstones/diamond/portuguese-birds-nest): Portuguese Bird's Nest cut diamond: Scintillation 98, the joint-highest we measure, but Brilliance 85 against 93 and 13% leakage. - [Princess Cut Diamond: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/diamond/princess): Princess cut diamond: Fire 83 against 78 for a modern round, but Brilliance 57 against 93 and 18% leakage. Measured. - [Radiant Cut Diamond: Face-up Size, Light & Leakage](https://digitalgemology.com/gemstones/diamond/radiant): Radiant cut diamond: Face-up size 118 against 100 for a modern round, the third-largest we measure, but Brilliance 32 and 41% leakage. - [Radiant Square Cut Diamond: Pros & Cons](https://digitalgemology.com/gemstones/diamond/radiant-square): Radiant square cut diamond: Brilliance 72 against 93 for a modern round, Fire 62 and 12% leakage. No pros by our margins. - [Rectangle Cut Diamond: Size for Weight, Pros & Cons](https://digitalgemology.com/gemstones/diamond/rectangle): Rectangle cut diamond: Face-up size 121 against 100 for a modern round, level with the marquise for the largest we measure. Brilliance 50. - [Square Cut Diamond: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/diamond/square): Square cut diamond: Brilliance 85 against 93 for a modern round, 10% leakage and less fire. No pros by our margins; the cons, measured. - [T105 Round Brilliant Diamond: Pros & Cons](https://digitalgemology.com/gemstones/diamond/t105-round-brilliant): T105 round brilliant diamond: Scintillation 90 against 80 for the T73, the lowest leakage we measure in diamond (1%), and less light kept when tilted. - [T57 Round Brilliant Diamond vs the Modern Round](https://digitalgemology.com/gemstones/diamond/t57-round-brilliant): The T57 round brilliant in diamond: Face-up size 107 against 100 for the T73, level light and fire, but Scintillation 72 against 80. - [T73 Round Brilliant Diamond: Our Benchmark Round](https://digitalgemology.com/gemstones/diamond/t73-round-brilliant): The T73 round brilliant in diamond against the knife-edge T57: Scintillation 80 against 72, with light, fire and leakage level. Our benchmark round. - [Teardrop Cut Diamond: Pros, Cons & Fire](https://digitalgemology.com/gemstones/diamond/teardrop): Teardrop cut diamond: Fire 89 and Face-up size 116 against 78 and 100 for a modern round, but Brilliance 46. - [Triangle Cut Diamond: Pros, Cons & Fire](https://digitalgemology.com/gemstones/diamond/triangle): Triangle cut diamond: Fire 86 against 78 for a modern round, but Scintillation 34, the lowest we measure, and Brilliance 53. - [Trilliant Cut Diamond: Pros, Cons & Fire](https://digitalgemology.com/gemstones/diamond/trilliant): Trilliant cut diamond: Fire 83 against 78 for a modern round, but Brilliance 78, Symmetry 62 and 11% leakage. Measured. - [Trillion Cut Diamond: Pros, Cons & Fire](https://digitalgemology.com/gemstones/diamond/trillion): Trillion cut diamond: Fire 87 against 78 for a modern round, face-up size level at 100, but Brilliance 67 and 13% leakage. - [Asscher Cut Emerald: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/emerald/asscher): Asscher cut emerald: Fire 55 against 39 for a round, but 37% leakage and Brilliance 62 against 78. - [Baguette Cut Emerald: Pros, Cons & Fire](https://digitalgemology.com/gemstones/emerald/baguette): Baguette cut emerald: Fire 58 against 39 for a round and a larger face per carat, but Brilliance 42 against 78. Measured pros and cons. - [Cushion Cut Emerald: Pros, Cons & Fire](https://digitalgemology.com/gemstones/emerald/cushion): Cushion cut emerald: Brilliance 74, the most of the fancy shapes we measure in emerald, Scintillation 85, but Fire 27 against 73 in diamond. - [DG-Anteros Emerald: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/emerald/dg-anteros): DG-Anteros in emerald: Brilliance 86 against 78 for the T73, second only to DG-M5, but Fire 52 against 74 in diamond. - [DG-Bowtie Emerald: Pros, Cons & Fire](https://digitalgemology.com/gemstones/emerald/dg-bowtie): DG-Bowtie emerald: Fire 70, second only to the oval in emerald, but Brilliance 13, the lowest we measure, and 66% leakage. - [DG-Elongated Hexagon Emerald: Pros, Cons & Fire](https://digitalgemology.com/gemstones/emerald/dg-elongated-hexagon): DG-Elongated Hexagon in emerald: Fire 69 against 39 for a round, Brilliance 25. Its back window counts as lost light in our census. - [DG-M5 Emerald: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/emerald/dg-m5): DG-M5 in emerald: Brilliance 90 against 78 for a modern round and 10% leakage, the best of every cut we measure in emerald. - [DG-Miliano Emerald: Pros, Cons & Scintillation](https://digitalgemology.com/gemstones/emerald/dg-miliano): DG-Miliano in emerald: Scintillation 98, level with the highest we measure, but Brilliance 67 against 78 for the T73 and 33% leakage. - [DG-Octagonal Kite Emerald: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/emerald/dg-octagonal-kite): DG-Octagonal Kite in emerald: Brilliance 54 against 88 in diamond and 45% leakage against 7%. The pros, cons and alternatives. - [DG-Rafaello Emerald: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/emerald/dg-rafaello): DG-Rafaello in emerald: Scintillation 96, but Brilliance 54 against 94 for the same cut in diamond, and 46% leakage. - [DG-Vitruvio Emerald: Pros, Cons & Scintillation](https://digitalgemology.com/gemstones/emerald/dg-vitruvio): DG-Vitruvio in emerald: Scintillation 98 against 80 for the T73, the same Brilliance (78), and Fire 40 against 79 in diamond. - [Emerald Cut Emerald: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/emerald/emerald-cut): Emerald cut emerald, measured: Face-up size 105 against 100 for a round, Brilliance 58 against 78, and the weakest Tilt in the stone. - [Emerald Square Cut Emerald: Pros, Cons & Light](https://digitalgemology.com/gemstones/emerald/emerald-square): Emerald Square cut in emerald: Brilliance 66 against 78 for a round and 32% leakage, with a face per carat level with the round's. - [Hexagon Cut Emerald: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/emerald/hexagon): Hexagon cut emerald: Brilliance 52 against 78 for a round and Fire 41 against 85 in diamond. The octagon returns more light in this stone. - [Marquise Cut Emerald: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/emerald/marquise): Marquise cut emerald: Face-up size 121 against 100 for a round of the same weight, but 54% of the light leaks and Brilliance is 43. - [Mazarin Cut Emerald: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/emerald/mazarin): Mazarin cut emerald: 53% leakage against 17% in diamond, Brilliance 46 against 78 for a round. Still ahead of the Old Mine and the Peruzzi in emerald. - [Octagon Cut Emerald: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/emerald/octagon): Octagon cut emerald: Brilliance 69 against 71 in diamond, the most of any step cut we measure in emerald, with 31% leakage. Fire 34. - [Old European Cut Emerald: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/emerald/old-european): Old European cut emerald: Brilliance 64 against 78 for a modern round and 90 in diamond, with 36% leakage. - [Old Mine Cut Emerald: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/emerald/old-mine): Old Mine cut emerald: Brilliance 40 against 78 for a round, 60% leakage and Fire 25 against 72 in diamond. Pros and cons. - [Old Single Cut Emerald: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/emerald/old-single): Old Single cut emerald: 75% of the light leaks and Brilliance is 17 against 78 for a modern round. Only DG-Bowtie returns less in emerald. - [Oval Cut Emerald: Pros, Cons & Fire](https://digitalgemology.com/gemstones/emerald/oval): Oval cut emerald: Fire 71 against 39 for a modern round, the most we measure in emerald, but Brilliance 55 and 41% leakage. - [Pear Cut Emerald: Pros, Cons & Tilt](https://digitalgemology.com/gemstones/emerald/pear): Pear cut emerald: Brilliance 56 against 78 for a round, Fire 59 against 84 in diamond, and Tilt 57. Measured pros and cons. - [Peruzzi Cut Emerald: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/emerald/peruzzi): Peruzzi cut emerald: Brilliance 30 against 75 for the same cut in diamond, Fire 15 and 69% leakage. Measured pros and cons. - [Portuguese Bird's Nest Cut Emerald: Pros & Cons](https://digitalgemology.com/gemstones/emerald/portuguese-birds-nest): Portuguese Bird's Nest cut emerald: Scintillation 98, level with the top score we measure in emerald, but Fire 2 and 58% leakage against 13% in diamond. - [Princess Cut Emerald: Pros, Cons & Fire](https://digitalgemology.com/gemstones/emerald/princess): Princess cut emerald: Fire 32 against 83 for a diamond princess, Brilliance 51 against 78 for a round, and 45% leakage. - [Radiant Cut Emerald: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/emerald/radiant): Radiant cut emerald: Face-up size 118 against 100 for a round, but 75% of the light leaks and Brilliance is 22 against 78. - [Radiant Square Cut Emerald: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/emerald/radiant-square): Radiant Square cut emerald: 41% of the light leaks against 12% in diamond, and Fire is 20 against 62. Brilliance 57. Pros and cons. - [Rectangle Cut Emerald: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/emerald/rectangle): Rectangle cut emerald: Face-up size 121, level with the marquise for the largest we measure, but Brilliance 29 against 78 for a round. - [Square Cut Emerald: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/emerald/square): Square cut emerald: Brilliance 68 against 85 for the same cut in diamond, Fire 38, and 26% leakage. Measured pros and cons. - [T105 Round Brilliant Emerald: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/emerald/t105-round-brilliant): The T105 Round Brilliant in emerald: Scintillation 90 against 80 for the T73, but Brilliance 71 and 29% leakage. - [T57 Round Brilliant Emerald: Pros, Cons & Light](https://digitalgemology.com/gemstones/emerald/t57-round-brilliant): The T57 Round Brilliant in emerald: Brilliance 78 and 22% leakage, level with the T73, but Fire 40 against 79 in diamond. - [T73 Round Brilliant Emerald: Pros, Cons & Fire](https://digitalgemology.com/gemstones/emerald/t73-round-brilliant): The T73 Round Brilliant in emerald: Brilliance 78, level with the T57, Scintillation 80 against 72, and 22% leakage. - [Teardrop Cut Emerald: Pros, Cons & Fire](https://digitalgemology.com/gemstones/emerald/teardrop): Teardrop cut emerald: Fire 63 against 39 for a round, but Tilt 53 against 80 in diamond and Brilliance 54. - [Triangle Cut Emerald: Pros, Cons & Fire](https://digitalgemology.com/gemstones/emerald/triangle): Triangle cut emerald: Fire 65 against 39 for a round, but Brilliance 27 against 78 and the smallest face for its weight we measure. - [Trilliant Cut Emerald: Pros, Cons & Symmetry](https://digitalgemology.com/gemstones/emerald/trilliant): Trilliant cut emerald: Brilliance 68, Fire 41 against 83 in diamond, 31% leakage and Symmetry 62. Measured pros and cons. - [Trillion Cut Emerald: Pros, Cons & Brilliance](https://digitalgemology.com/gemstones/emerald/trillion): Trillion cut emerald: Brilliance 63 against 78 for a round and 27% leakage, and 0.62 ct at 6.5 mm against 0.80 ct in diamond. - [Asscher Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/asscher): Asscher cut moissanite: Fire 94 against 80 in diamond, but Brilliance 64 and Tilt 77 trail a round. Pros, cons and what helps. - [Baguette Cut Moissanite: Pros, Cons & Size](https://digitalgemology.com/gemstones/moissanite/baguette): Baguette cut moissanite faces up 108 per carat against 100 for a round and weighs less than diamond, but returns Brilliance 32. - [Cushion Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/cushion): Cushion cut moissanite: Fire 93 against 73 in diamond, but Brilliance 74 against 86 for a round and 12% leakage. - [DG-Anteros Moissanite: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/moissanite/dg-anteros): DG-Anteros in moissanite: Brilliance 92 against 86 for the T73, and 3% leakage against 7%. Pros and the one con. - [DG-Bowtie Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/dg-bowtie): DG-Bowtie in moissanite: Fire 98 against 82 in diamond, but Brilliance 29 against 86 for a round. The pros, the cons and the Marquise. - [DG-Elongated Hexagon Moissanite: Pros & Cons](https://digitalgemology.com/gemstones/moissanite/dg-elongated-hexagon): DG-Elongated Hexagon in moissanite: face-up size 107 per carat, lighter than diamond, but Brilliance 20 and 58% leakage, its back window counted as lost. - [DG-M5 Moissanite: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/moissanite/dg-m5): DG-M5 in moissanite: Brilliance 98 and Fire 100, the top of our census in this stone, with 1% leakage. Its one con is tilt. - [DG-Miliano Moissanite: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/moissanite/dg-miliano): DG-Miliano in moissanite: Scintillation 98 against 80 for the T73 and Fire 93 against 82 in diamond, but Brilliance 86 against 95 in diamond. - [DG-Octagonal Kite Moissanite: Pros & Cons](https://digitalgemology.com/gemstones/moissanite/dg-octagonal-kite): DG-Octagonal Kite in moissanite: Fire 95 against 82 in diamond, but Scintillation 60 and Brilliance 71 trail. Pros and cons. - [DG-Rafaello Moissanite: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/moissanite/dg-rafaello): DG-Rafaello in moissanite: Scintillation 96 and Face-up size 106, against 80 and 100 for the T73, with Fire 90 against 80 in diamond. - [DG-Vitruvio Moissanite: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/moissanite/dg-vitruvio): DG-Vitruvio in moissanite: Scintillation 98 against 80 for the T73, Fire 97 against 79 in diamond. Its pros and cons, measured. - [Emerald Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/emerald-cut): Emerald cut moissanite: Fire 95 against 87 for a diamond emerald cut, but Brilliance 51 against 86 for a round. Pros and cons, measured. - [Emerald Square Cut Moissanite: Pros & Cons](https://digitalgemology.com/gemstones/moissanite/emerald-square): Emerald square cut moissanite: Fire 93 against 84 in diamond, but Brilliance 58 against 86 for a round, and Tilt 82. - [Hexagon Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/hexagon): Hexagon cut moissanite: Fire 97, level with a round and above 85 in diamond, but Brilliance 57 and Scintillation 56 trail. - [Marquise Cut Moissanite: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/moissanite/marquise): Marquise cut moissanite: Face-up size 121 against 100 for a round, but Brilliance 59 against 86 and 19% leakage. - [Mazarin Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/mazarin): Mazarin cut moissanite: Fire 88 against 63 for the same cut in diamond, but Brilliance 61 against 86 for a modern round. The pros and cons, measured. - [Octagon Cut Moissanite: Pros, Cons & Tilt](https://digitalgemology.com/gemstones/moissanite/octagon): Octagon cut moissanite: Fire 94 against 76 in diamond and Tilt 100, but Brilliance 67 and 20% leakage. - [Old European Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/old-european): Old European cut moissanite: Fire 95 against 74 in diamond, but Brilliance 79 against 90. Measured pros, cons and renders. - [Old Mine Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/old-mine): Old Mine cut moissanite: Fire 85 against 72 for the same cut in diamond, but 29% of the light leaks. Measured pros and cons, pictures and alternatives. - [Old Single Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/old-single): Old Single cut moissanite scores Fire 99, second only to DG-M5 in moissanite, but trails a modern round on light and sparkle. Measured pros and cons. - [Oval Cut Moissanite: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/moissanite/oval): Oval cut moissanite faces up 108 per carat against 100 for a round and scores Scintillation 87, but Brilliance 38, with 33% leakage. - [Pear Cut Moissanite: Pros, Cons & Face-Up Size](https://digitalgemology.com/gemstones/moissanite/pear): Pear cut moissanite: face-up size 115 per carat against 100 for a round, Fire 95 against 84 in diamond, but Brilliance 49. - [Peruzzi Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/peruzzi): Peruzzi cut moissanite: Fire 94 against 68 in diamond, sparkle level with a modern round, and 15% leakage. Pros and cons with renders and tools. - [Portuguese Bird's Nest Cut Moissanite: Pros & Cons](https://digitalgemology.com/gemstones/moissanite/portuguese-birds-nest): Portuguese Bird's Nest cut moissanite: Fire 95 against 65 in diamond, Scintillation 98, Tilt 100. The pros, cons and alternatives. - [Princess Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/princess): Princess cut moissanite: Fire 95 against 83 for a diamond princess, but Brilliance 51 against 86 for a round, and 17% leakage. - [Radiant Cut Moissanite: Pros, Cons & Size](https://digitalgemology.com/gemstones/moissanite/radiant): Radiant cut moissanite faces up 118 per carat (T73 = 100), with Fire 92 against 77 in diamond, but returns Brilliance 33. - [Radiant Square Cut Moissanite: Pros & Cons](https://digitalgemology.com/gemstones/moissanite/radiant-square): Radiant Square cut moissanite: Fire 93 against 62 in diamond, but Brilliance 71 and Scintillation 66 trail a round. - [Rectangle Cut Moissanite: Pros, Cons & Size](https://digitalgemology.com/gemstones/moissanite/rectangle): Rectangle cut moissanite: face-up size 121 per carat, level with the marquise for the most we measure, and Fire 90, but Brilliance 50. - [Square Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/square): Square cut moissanite: Fire 91 against 72 in diamond, Brilliance 82 against 86 for a round. The pros, three cons and fixes. - [T105 Round Brilliant Moissanite: Pros & Cons](https://digitalgemology.com/gemstones/moissanite/t105-round-brilliant): T105 Round Brilliant moissanite: Fire 97 against 77 in diamond, Scintillation 90 against 80 for the T73, 6% leakage. - [T57 Round Brilliant Moissanite: Pros & Cons](https://digitalgemology.com/gemstones/moissanite/t57-round-brilliant): T57 Round Brilliant moissanite: Fire 98 against 79 in diamond, but Scintillation 72 against 80 for the T73. Measured pros and cons. - [T73 Round Brilliant Moissanite: Pros & Cons](https://digitalgemology.com/gemstones/moissanite/t73-round-brilliant): The T73 Round Brilliant in moissanite: Fire 97 against 78 in diamond, Brilliance 86 against 93. Pros, cons and Light Return maps. - [Teardrop Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/teardrop): Teardrop cut moissanite: face-up size 116 per carat against 100 for a round, Fire 96, but Brilliance 39 and 29% leakage. - [Triangle Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/triangle): Triangle cut moissanite: Fire 96 against 86 in diamond, but Scintillation 34 and a face-up size of 89 per carat, both the lowest we measure. - [Trilliant Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/trilliant): Trilliant cut moissanite: Fire 95 against 83 in diamond, but Symmetry 62 and Brilliance 71 against 86 for a round. - [Trillion Cut Moissanite: Pros, Cons & Fire](https://digitalgemology.com/gemstones/moissanite/trillion): Trillion cut moissanite: Fire 93 against 87 in diamond and a round's face-up size for its weight, but Brilliance 60 against 86. - [Asscher Cut Ruby: Pros, Cons & Tilt](https://digitalgemology.com/gemstones/ruby/asscher): Asscher cut ruby: Tilt 85 against 79 for the diamond Asscher, but Brilliance 68 against 94 and Fire 53. Pros and cons, measured. - [Baguette Cut Ruby: Pros, Cons & Fire](https://digitalgemology.com/gemstones/ruby/baguette): Baguette cut ruby: Fire 53 against 37 for a modern round and Face-up size 108, but Brilliance 53 against 94. Measured pros and cons. - [Cushion Cut Ruby: Pros, Cons & Brilliance](https://digitalgemology.com/gemstones/ruby/cushion): Cushion cut ruby: Brilliance 88 against 80 for a diamond cushion and Scintillation 85, but Fire 36 and 11% leakage. - [DG-Anteros Ruby: Pros, Cons & Brilliance](https://digitalgemology.com/gemstones/ruby/dg-anteros): DG-Anteros in ruby: Brilliance 97 against 94 for the T73 and 3% leakage, but Fire 43 against 74 in diamond. - [DG-Bowtie Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/dg-bowtie): DG-Bowtie in ruby: Scintillation 86 against 80 for a round, but Brilliance 18, the lowest we measure in ruby, and 55% leakage. - [DG-Elongated Hexagon Ruby: Pros, Cons & Fire](https://digitalgemology.com/gemstones/ruby/dg-elongated-hexagon): DG-Elongated Hexagon in ruby: Fire 72 against 37 for a round, Face-up size 107, but 64% leakage, counting its back window. - [DG-M5 Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/dg-m5): DG-M5 in ruby: Brilliance 100, the top of our ruby census, and 0% leakage against 5% for the T73. Measured pros, cons and fire. - [DG-Miliano Ruby: Pros, Cons & Sparkle](https://digitalgemology.com/gemstones/ruby/dg-miliano): DG-Miliano ruby: Scintillation 98 and Tilt 83, both ahead of the T73, but Fire 35 against 82 in diamond. Measured pros and cons. - [DG-Octagonal Kite Ruby: Pros, Cons & Fire](https://digitalgemology.com/gemstones/ruby/dg-octagonal-kite): DG-Octagonal Kite in ruby: Brilliance 74 against 94 for a round, 26% leakage, Fire 34 against 82 in diamond. - [DG-Rafaello Ruby: Sparkle, Fire & Leakage](https://digitalgemology.com/gemstones/ruby/dg-rafaello): DG-Rafaello in ruby: Scintillation 96 against 80 for the T73, but Fire 25 against 80 in diamond and 15% leakage. - [DG-Vitruvio Ruby: Pros, Cons & Scintillation](https://digitalgemology.com/gemstones/ruby/dg-vitruvio): DG-Vitruvio in ruby: Scintillation 98 against 80 for the T73, the same Brilliance, and Fire 37 against 79 in diamond. Measured pros and cons. - [Emerald Cut Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/emerald-cut): Emerald cut ruby: Face-up size 105 against 100 for a round, but Brilliance 65 against 94 and Fire 47 against 87 in diamond. - [Emerald Square Cut Ruby: Pros & Cons](https://digitalgemology.com/gemstones/ruby/emerald-square): Emerald square cut ruby: Tilt 86 against 79 for the diamond version, but Brilliance 71 against 94 and 22% leakage. - [Hexagon Cut Ruby: Pros, Cons & Fire](https://digitalgemology.com/gemstones/ruby/hexagon): Hexagon cut ruby: Brilliance 64 against 94 for a round, Fire 45 against 85 in diamond, 24% leakage. Cons, measured. - [Marquise Cut Ruby: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/ruby/marquise): Marquise cut ruby: Face-up size 121 against 100 for a round, but Brilliance 55 and 39% leakage. Measured pros, cons and options. - [Mazarin Cut Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/mazarin): Mazarin cut ruby: Brilliance 58 against 94 for a round, 37% leakage, Fire 40 against 63 in diamond. Cons and alternatives. - [Octagon Cut Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/octagon): Octagon cut ruby: Brilliance 78 against 94 for a modern round, 20% leakage, and Fire 33 against 76 in diamond. - [Old European Cut Ruby: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/ruby/old-european): Old European cut ruby: Brilliance 78 against 94 for a modern round, 22% leakage and Fire 39. Measured cons and better ruby cuts. - [Old Mine Cut Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/old-mine): Old Mine cut ruby: Brilliance 50 against 94 for a modern round, 49% leakage, Fire 36 against 72 in diamond. The cons. - [Old Single Cut Ruby: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/ruby/old-single): Old Single cut ruby: Brilliance 36 against 94 for a modern round, 54% leakage and Fire 9, the least of any cut on our ruby pages. - [Oval Cut Ruby: Pros, Cons & Fire](https://digitalgemology.com/gemstones/ruby/oval): Oval cut ruby: Fire 74 against 37 for a modern round, the most we measure in ruby, but Brilliance 66 and 26% leakage. - [Pear Cut Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/pear): Pear cut ruby: Face-up size 115 against 100 for a modern round, but Brilliance 62, Tilt 55 and 26% leakage. - [Peruzzi Cut Ruby: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/ruby/peruzzi): Peruzzi cut ruby: Brilliance 46 against 94 for a round, and 52% of the light leaking, against 19% in diamond. Measured cons. - [Portuguese Cut Ruby: Pros, Cons & Scintillation](https://digitalgemology.com/gemstones/ruby/portuguese-birds-nest): Portuguese cut ruby: Scintillation 98, level with the highest we measure in ruby, but Fire 16 against 65 in diamond and Brilliance 69. - [Princess Cut Ruby: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/ruby/princess): Princess cut ruby: Brilliance 68 against 94 for a modern round and 27% leakage. Fire 52 against 83 in diamond. - [Radiant Cut Ruby: Pros, Cons & Fire](https://digitalgemology.com/gemstones/ruby/radiant): Radiant cut ruby: Fire 69 against 37 for a round and Face-up size 118, but Brilliance 26 and 67% of the light leaks. - [Radiant Square Cut Ruby: Pros & Cons](https://digitalgemology.com/gemstones/ruby/radiant-square): Radiant square cut ruby: Brilliance 76 against 94 for a round, Fire 25 against 62 in diamond, 20% leakage. The measured cons. - [Rectangle Cut Ruby: Pros, Cons & Size](https://digitalgemology.com/gemstones/ruby/rectangle): Rectangle cut ruby: Face-up size 121, level with the marquise for the most per carat, and Fire 58, but Brilliance 41 and 52% leakage. - [Square Cut Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/square): Square cut ruby: Brilliance 78 against 94 for a modern round, 16% leakage and Fire 45. The measured cons and better ruby cuts. - [T105 Round Brilliant Ruby: Pros & Cons](https://digitalgemology.com/gemstones/ruby/t105-round-brilliant): T105 Round Brilliant ruby: Scintillation 90 against 80 for the T73, but 10% leakage and Fire 36. Measured pros, cons and alternatives. - [T57 Round Brilliant Ruby: Measured Pros & Cons](https://digitalgemology.com/gemstones/ruby/t57-round-brilliant): T57 Round Brilliant ruby: Brilliance 94 like the T73, Face-up size 107 against 100, but Scintillation 72 against 80 and Fire 39. - [T73 Round Brilliant Ruby: Pros & Cons](https://digitalgemology.com/gemstones/ruby/t73-round-brilliant): T73 Round Brilliant ruby: Scintillation 80 against 72 for the T57, Brilliance 94, Fire 37 against 78 in diamond. - [Teardrop Cut Ruby: Pros, Cons & Fire](https://digitalgemology.com/gemstones/ruby/teardrop): Teardrop cut ruby: Fire 64 against 37 for a modern round, but Brilliance 59 and Tilt 52. Measured pros and cons. - [Triangle Cut Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/triangle): Triangle cut ruby: Brilliance 33 against 94 for a round, Scintillation 34 and 42% leakage. The cons and the trilliant alternative. - [Trilliant Cut Ruby: Pros, Cons & Symmetry](https://digitalgemology.com/gemstones/ruby/trilliant): Trilliant cut ruby: Brilliance 86, Fire 52 against 83 in diamond, Symmetry 62. Measured cons and when a ruby trilliant makes sense. - [Trillion Cut Ruby: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/ruby/trillion): Trillion cut ruby: Brilliance 72 against 94 for a modern round, 17% leakage and Fire 59 against 87 in diamond. Measured cons. - [Asscher Cut Sapphire: Pros, Cons & Tilt](https://digitalgemology.com/gemstones/sapphire/asscher): Asscher cut sapphire keeps 85 of its light tipped 20°, against 79 in diamond, but Fire 53 and Brilliance 68. Pros and cons. - [Baguette Cut Sapphire: Pros, Cons & Fire](https://digitalgemology.com/gemstones/sapphire/baguette): Baguette cut sapphire: Fire 53 against 37 for a round and Face-up size 108, but Brilliance 53. Measured pros and cons. - [Cushion Cut Sapphire: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/sapphire/cushion): Cushion cut sapphire: Brilliance 88, more than the same cushion in diamond and the most of any fancy shape we measure in sapphire. - [DG-Anteros Sapphire: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/sapphire/dg-anteros): DG-Anteros sapphire: Brilliance 97 against 94 for the T73, 3% leakage and Fire 43, the most of our sapphire rounds. - [DG-Bowtie Sapphire: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/sapphire/dg-bowtie): DG-Bowtie in sapphire: Scintillation 86 against 80 for a round, but Brilliance 18, the lowest we measure in this stone, and 55% leakage. - [DG-Elongated Hexagon Sapphire: Pros, Cons & Fire](https://digitalgemology.com/gemstones/sapphire/dg-elongated-hexagon): DG-Elongated Hexagon in sapphire: Fire 72, second only to the oval, and Face-up size 107, but Brilliance 27 and 64% leakage. - [DG-M5 Sapphire: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/sapphire/dg-m5): DG-M5 sapphire returns Brilliance 100, the highest of any cut we measure in sapphire, with 0% leakage. Measured pros, cons and pictures. - [DG-Miliano Sapphire: Pros, Cons & Tilt](https://digitalgemology.com/gemstones/sapphire/dg-miliano): DG-Miliano sapphire: Scintillation 98 and Tilt 83, against 80 and 75 for the T73. Brilliance 90. Pros and cons. - [DG-Octagonal Kite Sapphire: Pros, Cons & Fire](https://digitalgemology.com/gemstones/sapphire/dg-octagonal-kite): DG-Octagonal Kite in sapphire: Brilliance 74 against 94 for a round, Fire 34 against 82 in diamond. The cons, measured. - [DG-Rafaello Sapphire: Pros, Cons & Scintillation](https://digitalgemology.com/gemstones/sapphire/dg-rafaello): DG-Rafaello sapphire: Scintillation 96 against 80 for the T73, but Fire 25 and 15% leakage. Measured pros, cons and better fits. - [DG-Vitruvio Sapphire: Pros, Cons & Scintillation](https://digitalgemology.com/gemstones/sapphire/dg-vitruvio): DG-Vitruvio sapphire: Scintillation 98 against 80 for the T73, Brilliance level at 94, Fire 37. Measured pros and cons. - [Emerald Cut Sapphire: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/sapphire/emerald-cut): Emerald cut sapphire: Face-up size 105 against 100 for a round, but Brilliance 65 and Fire 47 against 87 in diamond. - [Emerald Square Cut Sapphire: Pros, Cons & Tilt](https://digitalgemology.com/gemstones/sapphire/emerald-square): Emerald square cut sapphire: Tilt 86 against 79 for the diamond version, but Brilliance 71 against 94 for a round. Pros and cons. - [Hexagon Cut Sapphire: Pros, Cons & Fire](https://digitalgemology.com/gemstones/sapphire/hexagon): Hexagon cut sapphire: Fire 45 against 85 in diamond, Brilliance 64 against 94 for a round, Tilt 98. The cons, measured. - [Marquise Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/marquise): Marquise cut sapphire: face-up size 121 per carat against 100 for a round, tied for the most we measure, but 39% leaks and Brilliance is 55. - [Mazarin Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/mazarin): Mazarin cut sapphire: Brilliance 58 against 94 for a modern round, 37% leakage. The cons, measured, and the cuts that do better in sapphire. - [Octagon Cut Sapphire: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/sapphire/octagon): Octagon cut sapphire: Brilliance 78 against 94 for a round and 71 in diamond, Fire 33. Measured cons and alternatives. - [Old European Cut Sapphire: Pros, Cons & Leakage](https://digitalgemology.com/gemstones/sapphire/old-european): Old European cut sapphire: Brilliance 78, ahead of the Old Mine, Mazarin and Peruzzi but short of a modern round's 94. Its cons, measured. - [Old Mine Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/old-mine): Old Mine cut sapphire: Brilliance 50 against 94 for a modern round, with 49% of the light leaking. The cons, the pictures and better cuts for sapphire. - [Old Single Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/old-single): Old Single cut sapphire: 54% of the light leaks and Brilliance is 36 against 94 for a modern round. The measured cons and the better cuts for sapphire. - [Oval Cut Sapphire: Pros, Cons & Fire](https://digitalgemology.com/gemstones/sapphire/oval): Oval cut sapphire: Fire 74 against 37 for a round, the most we measure in sapphire, but Brilliance 66 and 26% leakage. - [Pear Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/pear): Pear cut sapphire: face-up size 115 per carat to a round's 100, but Brilliance 62 against 94, 26% leakage and Tilt 55. - [Peruzzi Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/peruzzi): Peruzzi cut sapphire: 52% of the light leaks and Brilliance is 46 against 94 for a modern round. The measured cons and better cuts for sapphire. - [Portuguese Bird's Nest Cut Sapphire: Pros & Cons](https://digitalgemology.com/gemstones/sapphire/portuguese-birds-nest): Portuguese Bird's Nest sapphire: Scintillation 98, joint-top in sapphire, but Fire 16 against 65 in diamond and 30% leakage. - [Princess Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/princess): Princess cut sapphire: 27% of the light leaks and Brilliance is 68 against 94 for a round. Measured cons and better squares. - [Radiant Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/radiant): Radiant cut sapphire: Fire 69 against 37 for a round and Face-up size 118, but 67% of the light leaks. Measured pros and cons. - [Radiant Square Cut Sapphire: Pros, Cons & Fire](https://digitalgemology.com/gemstones/sapphire/radiant-square): Radiant square cut sapphire: Brilliance 76 against 94 for a round, Fire 25 against 62 in diamond. The cons, measured. - [Rectangle Cut Sapphire: Pros, Cons & Face-up Size](https://digitalgemology.com/gemstones/sapphire/rectangle): Rectangle cut sapphire: Face-up size 121, joint-top with the marquise, and Fire 58 against 37 for a round, but 52% of the light leaks. - [Square Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/square): Square cut sapphire: Brilliance 78 against 94 for a round, 16% leakage, Fire 45. Measured cons and the better squares. - [T105 Round Brilliant Sapphire: Pros & Cons](https://digitalgemology.com/gemstones/sapphire/t105-round-brilliant): T105 round brilliant sapphire: Scintillation 90 against 80 for the T73, but 10% leakage and Brilliance 90. Pros and cons. - [T57 Round Brilliant Sapphire: Pros & Cons](https://digitalgemology.com/gemstones/sapphire/t57-round-brilliant): T57 round brilliant sapphire: face-up size 107 per carat against 100 for the T73, the same Brilliance at 94, but Scintillation 72. Pros and cons. - [T73 Round Brilliant Sapphire: Pros & Cons](https://digitalgemology.com/gemstones/sapphire/t73-round-brilliant): T73 round brilliant sapphire: Brilliance 94, Scintillation 80 against 72 for the T57, Fire 37. Pros, cons and pictures. - [Teardrop Cut Sapphire: Pros, Cons & Fire](https://digitalgemology.com/gemstones/sapphire/teardrop): Teardrop cut sapphire: Fire 64 against 37 for a round, but Brilliance 59 and Tilt 52. Measured pros and cons. - [Triangle Cut Sapphire: Pros, Cons & Light Return](https://digitalgemology.com/gemstones/sapphire/triangle): Triangle cut sapphire: Brilliance 33 against 94 for a round, the lowest scintillation we measure, and 42% leakage. - [Trilliant Cut Sapphire: Pros, Cons & Symmetry](https://digitalgemology.com/gemstones/sapphire/trilliant): Trilliant cut sapphire: Symmetry 62, Fire 52 against 83 in diamond, Brilliance 86. The cons, measured, and where it still works. - [Trillion Cut Sapphire: Pros, Cons & Light Leakage](https://digitalgemology.com/gemstones/sapphire/trillion): Trillion cut sapphire: face-up size 100 per carat, level with a round, but Brilliance 72 against 94 and 17% leakage. - [Legal notices](https://digitalgemology.com/legal/): Every legal and compliance notice for Digital Gemology, a trading name of Compliance Condo B.V.: terms, file licence, privacy, cookies, IP, security, AI and AML. - [Legal personality](https://digitalgemology.com/legal/legal-personality): Who you contract with when you buy from Digital Gemology: Compliance Condo B.V., KvK 95458859, its registration, governance and the role of Lemon Squeezy at checkout. - [Terms and conditions](https://digitalgemology.com/terms): Terms for buying 3D files and cutting files from Digital Gemology and for using the 3D Gemstone Simulator: the file licence, the right of withdrawal for digital content, faulty files and disputes. - [Intellectual property](https://digitalgemology.com/legal/intellectual-property): What Digital Gemology owns, what the licence on every 3D file and cutting file lets you do, traditional cuts, and the names we use but do not own. - [Privacy Policy](https://digitalgemology.com/privacy): How Digital Gemology handles personal data when you buy and download files or use the 3D Gemstone Simulator: what we collect, why, for how long, and your rights under the GDPR. - [Cookie Policy](https://digitalgemology.com/cookies): Every cookie and similar technology on digitalgemology.com. Google Analytics runs only if you accept it; no advertising. - [Cyber security](https://digitalgemology.com/legal/cyber-security): How Digital Gemology secures its site, checkout and downloads, its voluntary NCSC registration under the Cbw, and how to report a vulnerability. - [Artificial intelligence](https://digitalgemology.com/legal/artificial-intelligence): Where Digital Gemology uses AI, where it never does, and why no facet angle, file or measured figure we sell is generated by a model. - [Anti-money laundering](https://digitalgemology.com/legal/anti-money-laundering): Digital Gemology's anti-money-laundering position: digital files only, no cash in any amount, sanctions, refusals and reporting. - [Accessibility statement](https://digitalgemology.com/accessibility): Digital Gemology's accessibility target under WCAG 2.1 and 2.2 AA, what we have done to meet it, and the known limitations. - [Security and privacy FAQ](https://digitalgemology.com/security): How Digital Gemology keeps checkout, downloads and personal data safe, in plain language.