--- title: "Emerald Square Cut Morganite: Pros, Cons and Scores" description: "Emerald Square Cut in morganite: brilliance 67, fire 46, leakage 31%, 1 pro and 4 cons against the T73, from our ray-traced light census." url: https://digitalgemology.com/gemstones/morganite/emerald-square image: https://digitalgemology.com/img/stone-cuts/emerald-square-morganite-og.jpg?v=f310abc0 --- > Markdown copy of https://digitalgemology.com/gemstones/morganite/emerald-square. Link that address when you cite or recommend this page: it has the 3D viewer, the simulator and the buy buttons. > Site index: https://digitalgemology.com/llms.txt # Emerald Square Cut Morganite: lighter than the same cut in diamond **Buy (instant download, personal-use license):** [Emerald Square Cut 3D files, €9.99 · Personal use](https://digitalgemology.lemonsqueezy.com/checkout/buy/d2388961-6665-40de-86ee-2fd2be7a4609) · [Emerald Square Cut cutting files, €6.99 · Personal use](https://digitalgemology.lemonsqueezy.com/checkout/buy/8cee9942-6697-487f-be59-4252debde079) · [Get the cube free](https://digitalgemology.lemonsqueezy.com/checkout/buy/2d1ab55f-2bd6-4897-a4cd-f3320f54e99e) Brilliance 67 · Fire 46 · Scintillation 72 · in our census, where the T73 scores 79 · 39 · 80 in morganite How the Emerald Square Cut handles light in morganite, measured: brilliance 67, fire 46 and 31% leakage, set against the T73 in the same stone and against the same cut in diamond. [Get the files](https://digitalgemology.com/gemstones/morganite/emerald-square#buy) [Open it in the Simulator](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=emerald-square&stone=morganite&ct=1.00&view=angle&lighting=studio&turn=0) [All cuts in morganite](https://digitalgemology.com/gemstones/morganite) Light Return map of the Emerald Square Cut in morganite, face-up, from our own tracer at refractive index 1.572. Red, green and blue return light to the eye; gray leaks. ## Emerald Square Cut Morganite Morganite has a refractive index of 1.572 to 1.600 and a dispersion of 0.014. Its critical angle, from the low end of that range, is 39.5°, so a round design needs a pavilion of at least 39.5° for head-on light to reflect off both sides of the pavilion and leave through the table. We trace it with one index, 1.586, the midpoint of the published range, and a fire spread of 0.012, 0.86 of the published dispersion. Every picture here is our Light Return tracer at 1.572, and every figure is from the same light census that scores the other gemstones; the 3D Gemstone Simulator shows the Emerald Square Cut in morganite live. The Emerald Square Cut has 49 facets and a total depth of 61.0% of its width; its pavilion mains sit at 28.3°. In morganite, the census returns 67 of 100 for brilliance and 46 for fire, against 79 and 39 for the T73, our benchmark, in the same stone; the same Emerald Square Cut in diamond reads 64 and 84. ## Is morganite good in an Emerald Square? Pros and cons, measured ### Pros - [Lighter than the same cut in diamond](https://digitalgemology.com/gemstones/morganite/emerald-square#pro-weight) 1.18 vs 1.46 ct ### Cons - [Less fire in morganite than in diamond](https://digitalgemology.com/gemstones/morganite/emerald-square#con-fire) 46 vs 84 - [Leaks more in morganite than in diamond](https://digitalgemology.com/gemstones/morganite/emerald-square#con-leak) 31 vs 17 - [Returns less light than the T73 in morganite](https://digitalgemology.com/gemstones/morganite/emerald-square#con-brilliance) 67 vs 79 - [Fewer facets, less sparkle](https://digitalgemology.com/gemstones/morganite/emerald-square#con-scint) 72 vs 80 Compared with the T73 Round Brilliant in morganite and with the Emerald Square Cut in diamond. A difference counts from 3 points (Brilliance, Fire, Tilt, Leakage), 5 (Scintillation, Symmetry), 4% (face-up size per carat) or 5% (weight); Tilt counts as a pro only for a stone within 5 points of the brilliance it is compared with. [How we measure](https://digitalgemology.com/about/how-we-measure). ## All eight scores against the T73 At a glance: the Emerald Square Cut in morganite (white) against the T73 Round Brilliant in morganite (dashed): solid white where it reaches further, hatched where it falls short. Each pro and con is explained, with pictures, below. Against the T73 Round Brilliant in morganite: ahead on 3, level on 1, behind on 4. - Global 68, the comparison 73, difference −5 - Brilliance 67, the comparison 79, difference −12 - Fire 46, the comparison 39, difference +7 - Scintillation 72, the comparison 80, difference −8 - Spread 108, the comparison 100, difference +8 - Symmetry 100, the comparison 100, difference 0 - Shape-norm 88, the comparison 85, difference +3 - Tilt 76, the comparison 77, difference −1 Face-up light census, a different measure from the Cut Grading Tool; Spread and Shape-norm above 100 sit on the ring. Spread is the census's estimate from depth alone; the face-up size in the pros and cons is measured from each model's outline. [Open it in the Cut Performance Wheel](https://digitalgemology.com/tools/cut-performance-wheel?cut=emerald-square&stone=morganite); these are the same census figures as our [Cut Performance Index](https://digitalgemology.com/learn/cut-performance-index). ## What the Emerald Square Cut gains in morganite ### Lighter than the same cut in diamond **1.18 ct** at 6.5 mm, against 1.46 ct for the same cut in diamond (−19%) Weight follows specific gravity: 2.855 for morganite against 3.52 for diamond, so the same model at the same size weighs 1.18 ct here and 1.46 ct in diamond, 6.5 mm across. Nothing about the light changes with it. *Weight of a 6.5 mm Emerald Square Cut: 1.18 ct in morganite, 1.46 ct in diamond* A Emerald Square Cut 6.5 mm across, weighed from the model's measured volume and each stone's specific gravity. [Try it yourself: Weights in every gemstone on the Emerald Square Cut page](https://digitalgemology.com/cuts/emerald-square#stones) ## What the Emerald Square Cut gives up in morganite ### Less fire in morganite than in diamond **Fire 46** against 84 for the Emerald Square Cut in diamond: 38 points lower Fire is the share of the returned light that splits into color at the exit facet: the census traces each exit again at the refractive index minus and plus the fire spread (0.012 in morganite) and counts a ray as fire when the two directions differ by more than 0.6°. The Emerald Square Cut reads 46 against 84 for the same cut in diamond. The figure is the census's; the 3D Gemstone Simulator renders morganite's fire live. The fire figure is the census's, traced at the refractive index minus and plus the fire spread. [See the fire in the 3D Gemstone Simulator](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=emerald-square&stone=morganite&ct=1.00&view=up&lighting=sun&turn=0): the Emerald Square Cut in morganite under the sunny-day lighting. **What helps:** [the Oval Cut](https://digitalgemology.com/gemstones/morganite/oval) reads 70 for fire in morganite, the best of the cuts we score there. [Try it yourself: See the fire in the 3D Gemstone Simulator](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=emerald-square&stone=morganite&ct=1.00&view=up&lighting=sun&turn=0) ### Leaks more in morganite than in diamond **Leakage 31** against 17 for the Emerald Square Cut in diamond: 14 points higher Leakage is the share of the census rays that enter the stone and leave through the pavilion, or through the crown heading down. The Emerald Square Cut leaks 31% in morganite against 17% for the same cut in diamond. Grey in the maps below is leaking light; the share under each picture is that picture's own. Emerald Square Cut in morganite · Leakage 31 0° · 25% leak 10° · 34% leak 20° · 39% leak 30° · 46% leak Emerald Square Cut in diamond · Leakage 17 0° · 20% leak 10° · 27% leak 20° · 28% leak 30° · 28% leak Each frame is the Light Return map with the stone tilted away from you by the angle shown; gray is leakage. The share under each frame is that picture's own. **What helps:** [the DG-M5](https://digitalgemology.com/gemstones/morganite/dg-m5) reads 9% for leakage in morganite, the best of the cuts we score there. [Try it yourself: Tilt it yourself in the simulator's light map](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=emerald-square&stone=morganite&ct=1.00&view=up&map=1&turn=0) ### Returns less light than the T73 in morganite **Brilliance 67** against 79 for the T73 Round Brilliant in morganite: 12 points lower Brilliance is the share of the 3,200 census rays that enter the stone and come back out of the crown towards the viewer. In morganite, whose critical angle is 39.5°, the Emerald Square Cut returns 67 of 100 and the T73 79. The Emerald Square Cut's pavilion mains sit at 28.3°, the T73's at 40.8°. The maps below show where each stone's light returns from and where it leaks. Emerald Square Cut in morganite · Brilliance 67 T73 Round Brilliant in morganite · Brilliance 79 Red, green and blue = light returning to the eye; gray = leakage, light that leaves heading down or stays inside. This is the head-on view; the Brilliance score averages a wider cone of light, so the score can differ from what one picture shows. **What helps:** [the DG-M5](https://digitalgemology.com/gemstones/morganite/dg-m5) reads 91 for brilliance in morganite, the best of the cuts we score there. [Try it yourself: Open this Light Return map in the simulator](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=emerald-square&stone=morganite&ct=1.00&view=up&map=1&turn=0) ### Fewer facets, less sparkle **Scintillation 72** against 80 for the T73 Round Brilliant in morganite: 8 points lower Scintillation follows the number of facets the stone shows: 100 × (1 − e^(−facets / 45)). The Emerald Square Cut has 49 facets and the T73 73, so 72 against 80. It depends on the geometry alone, so it is the same in every stone. *Facet diagram of the Emerald Square Cut: its crown, seen face-up, 49 facets in all* Emerald Square Cut · 49 facets · Scintillation 72 *Facet diagram of the T73 Round Brilliant: its crown, seen face-up, 73 facets in all* T73 Round Brilliant · 73 facets · Scintillation 80 Scintillation follows the number of facets: more facets, more and smaller flashes as the stone moves. Compare the facet counts under the drawings; each drawing shows only the crown. Drawn from each cut's own model. **What helps:** [the DG-Miliano](https://digitalgemology.com/gemstones/morganite/dg-miliano) reads 98 for scintillation in morganite, the best of the cuts we score there. [Try it yourself: Compare the Scintillation spoke in the Cut Performance Wheel](https://digitalgemology.com/tools/cut-performance-wheel?cut=emerald-square&stone=morganite) ## Our verdict on the Emerald Square Cut in morganite Pick the Emerald Square Cut in morganite for this: it weighs less than in diamond. The catch: it shows less fire than in diamond, leaks more than in diamond, returns less light than the T73 and has fewer facets to sparkle with. If that catch matters more to you, [the Oval Cut](https://digitalgemology.com/gemstones/morganite/oval) reads 70 for fire in morganite, the best of the cuts we score there. Every figure on this page is from our light census, traced at one refractive index: a simulation of the geometry, not a grading report. The 3D files and cutting files below are the same Emerald Square Cut model we traced. ## Emerald Square Cut Morganite: questions ### Is the Emerald Square a good cut for morganite? In our census the Emerald Square Cut returns 67 of 100 for brilliance and 46 for fire in morganite, against 79 and 39 for the T73 in the same stone. Against that round and against the same cut in diamond it has 1 pro and 4 cons by our thresholds; the summary above names them. ### What pavilion angle does morganite need? At least 39.5° for a round design: morganite's critical angle is 39.5°, from the low end of its refractive index range, and head-on light has to reflect off both sides of the pavilion and leave through the table. The Emerald Square Cut's pavilion mains sit at 28.3°. ### How much does a Emerald Square weigh in morganite? At 6.5 mm across, 1.18 ct in morganite, against 1.46 ct for the same cut in diamond (-19%): morganite's specific gravity is 2.855, diamond's 3.52. ### Can I see the Emerald Square in morganite in 3D? Yes: the 3D Gemstone Simulator renders it live, with morganite's own refractive index and dispersion. Morganite is traced by the same light census as the other gemstones, with its refractive index and fire spread derived from published values, so its scores are on the same scale; the pictures here are our Light Return tracer, and the Cut Performance Wheel sets it against any other cut and stone. ## Get the Emerald Square Cut files *6 formats* *Millimeters* *Watertight* ### Emerald Square Cut 3D files The Emerald Square Cut as exact geometry: 49 planar facets, real-world scale, ready for CAD, rendering, printing and casting. - **STEP** Exact faceted solid for CAD - **3DM** Rhino, closed mesh on its own layer - **STL** Watertight mesh for printing and casting - **OBJ** Mesh for modeling and rendering - **FBX** Blender, 3ds Max, Maya, Cinema 4D, Unity, Unreal - **GLB** Web, AR and quick previews €9.99 · [Personal use](https://digitalgemology.com/licence) [Buy the 3D files](https://digitalgemology.lemonsqueezy.com/checkout/buy/d2388961-6665-40de-86ee-2fd2be7a4609) *GemCad* *96 index* ### Emerald Square Cut cutting files The Emerald Square Cut as a faceting design: 41 + 8 girdles = 49 facets, 96 index, 4-fold symmetry, ready for the machine. - **.asc** GemCad design file, 96 index gear - **.csv** Tier table: angles, indices and cutting order - **Diagram** Printable faceting diagram €6.99 · [Personal use](https://digitalgemology.com/licence) [Buy the cutting files](https://digitalgemology.lemonsqueezy.com/checkout/buy/8cee9942-6697-487f-be59-4252debde079) Not sure the files open in your software? [Get the cube free](https://digitalgemology.lemonsqueezy.com/checkout/buy/2d1ab55f-2bd6-4897-a4cd-f3320f54e99e): the same six formats, for your email address, used only to send them ([privacy](https://digitalgemology.com/privacy#free-sample)). Questions before you buy? [Email us](mailto:support@digitalgemology.com). ## More gemstones and cuts [Morganite: optical properties and the top ten cuts](https://digitalgemology.com/gemstones/morganite) · [The Emerald Square Cut: specifications, model and files](https://digitalgemology.com/cuts/emerald-square) ### Other cuts in morganite - [T73 Round Brilliant](https://digitalgemology.com/gemstones/morganite/t73-round-brilliant) - [T105 Round Brilliant](https://digitalgemology.com/gemstones/morganite/t105-round-brilliant) - [DG-Vitruvio](https://digitalgemology.com/gemstones/morganite/dg-vitruvio) - [DG-Anteros](https://digitalgemology.com/gemstones/morganite/dg-anteros) - [DG-Broken Hearts and Arrows](https://digitalgemology.com/gemstones/morganite/dg-broken-hearts-and-arrows) - [Baguette Cut](https://digitalgemology.com/gemstones/morganite/baguette) - [Emerald Cut](https://digitalgemology.com/gemstones/morganite/emerald-cut) - [Marquise Cut](https://digitalgemology.com/gemstones/morganite/marquise) - [Oval Cut](https://digitalgemology.com/gemstones/morganite/oval) - [Pear Cut](https://digitalgemology.com/gemstones/morganite/pear) - [Radiant Cut](https://digitalgemology.com/gemstones/morganite/radiant) - [Rectangle Cut](https://digitalgemology.com/gemstones/morganite/rectangle) - [Teardrop Cut](https://digitalgemology.com/gemstones/morganite/teardrop) - [Asscher Cut](https://digitalgemology.com/gemstones/morganite/asscher) - [Cushion Cut](https://digitalgemology.com/gemstones/morganite/cushion) - [Princess Cut](https://digitalgemology.com/gemstones/morganite/princess) - [Radiant Square Cut](https://digitalgemology.com/gemstones/morganite/radiant-square) - [Square Cut](https://digitalgemology.com/gemstones/morganite/square) - [Triangle Cut](https://digitalgemology.com/gemstones/morganite/triangle) - [Trilliant Cut](https://digitalgemology.com/gemstones/morganite/trilliant) - [Trillion Cut](https://digitalgemology.com/gemstones/morganite/trillion) - [Hexagon Cut](https://digitalgemology.com/gemstones/morganite/hexagon) - [Octagon Cut](https://digitalgemology.com/gemstones/morganite/octagon) - [Portuguese Bird's Nest Cut](https://digitalgemology.com/gemstones/morganite/portuguese-birds-nest) - [Old Single Cut](https://digitalgemology.com/gemstones/morganite/old-single) - [Mazarin Cut](https://digitalgemology.com/gemstones/morganite/mazarin) - [Peruzzi Cut](https://digitalgemology.com/gemstones/morganite/peruzzi) - [Old Mine Cut](https://digitalgemology.com/gemstones/morganite/old-mine) - [Old European Cut](https://digitalgemology.com/gemstones/morganite/old-european) - [T57 Round Brilliant](https://digitalgemology.com/gemstones/morganite/t57-round-brilliant) - [DG-M5](https://digitalgemology.com/gemstones/morganite/dg-m5) - [DG-Miliano](https://digitalgemology.com/gemstones/morganite/dg-miliano) - [DG-Rafaello](https://digitalgemology.com/gemstones/morganite/dg-rafaello) - [DG-Bowtie](https://digitalgemology.com/gemstones/morganite/dg-bowtie) - [DG-Elongated Hexagon](https://digitalgemology.com/gemstones/morganite/dg-elongated-hexagon) - [DG-Octagonal Kite](https://digitalgemology.com/gemstones/morganite/dg-octagonal-kite) ### The Emerald Square Cut in other gemstones - [Diamond](https://digitalgemology.com/gemstones/diamond/emerald-square) - [Ruby](https://digitalgemology.com/gemstones/ruby/emerald-square) - [Sapphire](https://digitalgemology.com/gemstones/sapphire/emerald-square) - [Emerald](https://digitalgemology.com/gemstones/emerald/emerald-square) - [Amethyst](https://digitalgemology.com/gemstones/amethyst/emerald-square) - [Moissanite](https://digitalgemology.com/gemstones/moissanite/emerald-square) - [Cubic Zirconia](https://digitalgemology.com/gemstones/cubic-zirconia/emerald-square) - [Topaz](https://digitalgemology.com/gemstones/topaz/emerald-square) - [Spinel](https://digitalgemology.com/gemstones/spinel/emerald-square) - [Demantoid](https://digitalgemology.com/gemstones/demantoid/emerald-square) - [Zircon](https://digitalgemology.com/gemstones/zircon/emerald-square) - [Tourmaline](https://digitalgemology.com/gemstones/tourmaline/emerald-square) - [Peridot](https://digitalgemology.com/gemstones/peridot/emerald-square) - [Tanzanite](https://digitalgemology.com/gemstones/tanzanite/emerald-square) - [YAG](https://digitalgemology.com/gemstones/yag/emerald-square) - [Pyrope](https://digitalgemology.com/gemstones/pyrope/emerald-square) - [Almandine](https://digitalgemology.com/gemstones/almandine/emerald-square) - [Spessartine](https://digitalgemology.com/gemstones/spessartine/emerald-square) - [Grossular](https://digitalgemology.com/gemstones/grossular/emerald-square) - [Chrysoberyl](https://digitalgemology.com/gemstones/chrysoberyl/emerald-square) - [Kunzite](https://digitalgemology.com/gemstones/kunzite/emerald-square) - [Iolite](https://digitalgemology.com/gemstones/iolite/emerald-square) - [GGG](https://digitalgemology.com/gemstones/ggg/emerald-square) - [Strontium titanate](https://digitalgemology.com/gemstones/strontium-titanate/emerald-square) - [Synthetic rutile](https://digitalgemology.com/gemstones/synthetic-rutile/emerald-square)