--- title: "DG-Cabochon Cut: 3D Model & Faceting Diagram" description: "DG-Cabochon Cut 3D model and GemCad faceting diagram: 76 facets, 6.26 x 5.96 x 6.73 mm. Six formats." url: https://digitalgemology.com/cuts/dg-cabochon image: https://digitalgemology.com/img/cuts/bl-cabochon-og.jpg?v=6a95f3ea --- > Markdown copy of https://digitalgemology.com/cuts/dg-cabochon. 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 [Cuts](https://digitalgemology.com/cuts/) · [House cuts](https://digitalgemology.com/cuts/#house) # DG-Cabochon Cut **Buy (instant download, personal-use license):** [3D files · €14.99](https://digitalgemology.lemonsqueezy.com/checkout/buy/5b8a47ea-a607-42fd-90b9-f173b98744cd) · [Cutting files · €12.99](https://digitalgemology.lemonsqueezy.com/checkout/buy/203d3a68-5eb3-49e2-a73d-f5046968af8f) · [DG-Cabochon Cut 3D files, €14.99 · Personal use](https://digitalgemology.lemonsqueezy.com/checkout/buy/5b8a47ea-a607-42fd-90b9-f173b98744cd) · [DG-Cabochon Cut cutting files, €12.99 · Personal use](https://digitalgemology.lemonsqueezy.com/checkout/buy/203d3a68-5eb3-49e2-a73d-f5046968af8f) · [Get the cube free](https://digitalgemology.lemonsqueezy.com/checkout/buy/2d1ab55f-2bd6-4897-a4cd-f3320f54e99e) 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. There, the crown and pavilion triangles meet in a zig-zag, with no girdle band. It is drawn for ruby. [3D files · €14.99](https://digitalgemology.lemonsqueezy.com/checkout/buy/5b8a47ea-a607-42fd-90b9-f173b98744cd) [Cutting files · €12.99](https://digitalgemology.lemonsqueezy.com/checkout/buy/203d3a68-5eb3-49e2-a73d-f5046968af8f) Instant download · [Personal-use license](https://digitalgemology.com/licence) · [What is in the files](https://digitalgemology.com/cuts/dg-cabochon#buy) · [Grade it in 3D](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=dg-cabochon&stone=ruby) ## About the DG-Cabochon Cut 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. There, the crown and pavilion triangles meet in a zig-zag, with no girdle band. It is drawn for ruby. Like a cabochon, it has no table. It is made to be seen from above and set on its flat base, but every surface of the dome stays faceted. ## DG-Cabochon Cut specifications Measured from the delivered model, not quoted from a standard. **Category** House cuts **Facets** 76 planar facets **Outline** Length to width 1.051 **Total depth** 112.9% of width **Table** None: the top closes to a point, like a cabochon's dome **Crown angle (main)** 58.0° **Pavilion angle (main)** 69.5° **Reference size** 6.26 x 5.96 x 6.73 mm at 2.00 ct in diamond **Volume** 113.64 mm³ **Cutting file accuracy** Every crown and pavilion facet within 0.004° of the 3D model (average under 0.001°) **Index gear** 120 **Symmetry** 5-fold mirror-image symmetry **Tiers** 6 crown, 5 pavilion **Files** STEP, 3DM, STL, OBJ, FBX, GLB, GemCad .asc, tier table, diagram ## Face-up and profile *Face-up facet diagram of the DG-Cabochon Cut* Face-up: the crown facets, drawn from the model's own edges. *Side profile of the DG-Cabochon Cut* Profile: 112.9% total depth. ![Light Return map of the DG-Cabochon Cut in ruby: a computed render showing direct, indirect and contrast light across the face-up stone.](https://digitalgemology.com/img/cuts/bl-cabochon-lightmap.webp?v=e5fa5eed) Light Return map of the DG-Cabochon Cut in ruby. A computed render of the model's geometry, not a photograph. ## Cut Performance Index - Diamond not yet scored - Moissanite not yet scored - Cubic Zirconia not yet scored - Ruby not yet scored - Sapphire not yet scored - Emerald not yet scored - Amethyst not yet scored ### Also scored in 19 more gemstones - Topaz not yet scored - Spinel not yet scored - Demantoid not yet scored - Zircon not yet scored - Tourmaline not yet scored - Peridot not yet scored - Tanzanite not yet scored - YAG not yet scored - Pyrope not yet scored - Almandine not yet scored - Spessartine not yet scored - Grossular not yet scored - Chrysoberyl not yet scored - Kunzite not yet scored - Iolite not yet scored - Morganite not yet scored - GGG not yet scored - Strontium titanate not yet scored - Synthetic rutile not yet scored This stone has no table, so the head-on light measure we use for the other cuts does not apply. [See how every cut compares](https://digitalgemology.com/learn/cut-performance-index) ## The DG-Cabochon Cut in seven gemstones We do not measure brilliance, fire and scintillation for the DG-Cabochon Cut: our census follows light that enters through the table and returns face up, and this stone has no table. Also scored, with the same census, in 19 more gemstones: [topaz](https://digitalgemology.com/gemstones/topaz), [spinel](https://digitalgemology.com/gemstones/spinel), [demantoid](https://digitalgemology.com/gemstones/demantoid), [zircon](https://digitalgemology.com/gemstones/zircon), [tourmaline](https://digitalgemology.com/gemstones/tourmaline), [peridot](https://digitalgemology.com/gemstones/peridot), [tanzanite](https://digitalgemology.com/gemstones/tanzanite), [YAG](https://digitalgemology.com/gemstones/yag), [pyrope](https://digitalgemology.com/gemstones/pyrope), [almandine](https://digitalgemology.com/gemstones/almandine), [spessartine](https://digitalgemology.com/gemstones/spessartine), [grossular](https://digitalgemology.com/gemstones/grossular), [chrysoberyl](https://digitalgemology.com/gemstones/chrysoberyl), [kunzite](https://digitalgemology.com/gemstones/kunzite), [iolite](https://digitalgemology.com/gemstones/iolite), [morganite](https://digitalgemology.com/gemstones/morganite), [GGG](https://digitalgemology.com/gemstones/ggg), [strontium titanate](https://digitalgemology.com/gemstones/strontium-titanate) and [synthetic rutile](https://digitalgemology.com/gemstones/synthetic-rutile). Their head-on figures are in the table below. ### Critical angle and weight in each stone The same geometry behaves differently in every material. Light that meets a pavilion facet at less than the critical angle of the stone does not reflect. It passes straight out of the back and shows face-up as a window. This stone has no table, so the head-on measure for the other cuts does not apply to it. The table below gives the weight of the model in each stone. Head-on light in amethyst: a steep facet reflects it, a shallow facet lets it out of the back. | Stone | Refractive index | Critical angle | Pavilion reflecting head-on light | Weight at this size | Verdict | | --- | --- | --- | --- | --- | --- | | [Diamond](https://digitalgemology.com/gemstones/diamond) | 2.417 | 24.4° | n/a | 2.00 ct | Not measured: no table | | [Moissanite](https://digitalgemology.com/gemstones/moissanite) | 2.648 to 2.691 | 22.2° | n/a | 1.83 ct | Not measured: no table | | [Cubic Zirconia](https://digitalgemology.com/gemstones/cubic-zirconia) | 2.15 to 2.18 | 27.7° | n/a | 3.30 ct | Not measured: no table | | [Ruby](https://digitalgemology.com/gemstones/ruby) | 1.762 to 1.770 | 34.6° | n/a | 2.27 ct | Not measured: no table | | [Sapphire](https://digitalgemology.com/gemstones/sapphire) | 1.762 to 1.770 | 34.6° | n/a | 2.27 ct | Not measured: no table | | [Emerald](https://digitalgemology.com/gemstones/emerald) | 1.577 to 1.583 | 39.4° | n/a | 1.55 ct | Not measured: no table | | [Amethyst](https://digitalgemology.com/gemstones/amethyst) | 1.544 to 1.553 | 40.4° | n/a | 1.51 ct | Not measured: no table | | [Topaz](https://digitalgemology.com/gemstones/topaz) | 1.606 to 1.644 | 38.5° | n/a | 2.01 ct | Not measured: no table | | [Spinel](https://digitalgemology.com/gemstones/spinel) | 1.712 to 1.747 | 35.7° | n/a | 2.06 ct | Not measured: no table | | [Demantoid](https://digitalgemology.com/gemstones/demantoid) | 1.881 to 1.888 | 32.1° | n/a | 2.19 ct | Not measured: no table | | [Zircon](https://digitalgemology.com/gemstones/zircon) | 1.925 to 1.984 | 31.3° | n/a | 2.65 ct | Not measured: no table | | [Tourmaline](https://digitalgemology.com/gemstones/tourmaline) | 1.603 to 1.655 | 38.6° | n/a | 1.78 ct | Not measured: no table | | [Peridot](https://digitalgemology.com/gemstones/peridot) | 1.650 to 1.690 | 37.3° | n/a | 1.90 ct | Not measured: no table | | [Tanzanite](https://digitalgemology.com/gemstones/tanzanite) | 1.685 to 1.707 | 36.4° | n/a | 1.90 ct | Not measured: no table | | [YAG](https://digitalgemology.com/gemstones/yag) | 1.833 | 33.1° | n/a | 2.59 ct | Not measured: no table | | [Pyrope](https://digitalgemology.com/gemstones/pyrope) | 1.730 to 1.766 | 35.3° | n/a | 2.14 ct | Not measured: no table | | [Almandine](https://digitalgemology.com/gemstones/almandine) | 1.750 to 1.830 | 34.8° | n/a | 2.34 ct | Not measured: no table | | [Spessartine](https://digitalgemology.com/gemstones/spessartine) | 1.790 to 1.830 | 34.0° | n/a | 2.36 ct | Not measured: no table | | [Grossular](https://digitalgemology.com/gemstones/grossular) | 1.730 to 1.760 | 35.3° | n/a | 2.07 ct | Not measured: no table | | [Chrysoberyl](https://digitalgemology.com/gemstones/chrysoberyl) | 1.746 to 1.755 | 34.9° | n/a | 2.12 ct | Not measured: no table | | [Kunzite](https://digitalgemology.com/gemstones/kunzite) | 1.660 to 1.676 | 37.0° | n/a | 1.81 ct | Not measured: no table | | [Iolite](https://digitalgemology.com/gemstones/iolite) | 1.542 to 1.551 | 40.4° | n/a | 1.48 ct | Not measured: no table | | [Morganite](https://digitalgemology.com/gemstones/morganite) | 1.572 to 1.600 | 39.5° | n/a | 1.62 ct | Not measured: no table | | [GGG](https://digitalgemology.com/gemstones/ggg) | 1.970 | 30.5° | n/a | 4.01 ct | Not measured: no table | | [Strontium titanate](https://digitalgemology.com/gemstones/strontium-titanate) | 2.409 | 24.5° | n/a | 2.91 ct | Not measured: no table | | [Synthetic rutile](https://digitalgemology.com/gemstones/synthetic-rutile) | 2.616 to 2.903 | 22.5° | n/a | 2.42 ct | Not measured: no table | Head-on light, first reflection. The [3D Gemstone Simulator](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=dg-cabochon&stone=ruby) traces the full Light Return in each of these gemstones. ![DG-Cabochon Cut 3D model](https://digitalgemology.com/img/cuts/bl-cabochon-3d.webp?v=80147332) ## Grade the DG-Cabochon Cut in 3D Open it in the 3D Gemstone Simulator. Set its carat, color, clarity and cut grade in any of seven gemstones. Turn it under ten kinds of light, and watch its 3D gemstone report change as you go. Free, in your browser. [Open it in the Simulator](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=dg-cabochon&stone=ruby) ## DG-Cabochon Cut: questions ### What files come with the DG-Cabochon Cut 3D model? Six formats. STEP is the exact faceted solid for CAD, and 3DM is for Rhino. STL and OBJ are meshes. FBX is for Blender, 3ds Max, Maya, Cinema 4D, Unity and Unreal. GLB is for the web and AR. All are in millimeters at real-world scale, with 76 planar facets. ### Is there a faceting diagram for the DG-Cabochon Cut? Yes. The cutting files contain a GemCad .asc design (76 facets, 120 index, 5-fold mirror-image symmetry) and a printable faceting diagram. They also contain a tier table in CSV, with the angles, indices and cutting order. ### Does the DG-Cabochon Cut work in sapphire, emerald or amethyst? This stone has no table, so the head-on light measure that we use for the other cuts does not apply. Light enters and leaves through its steep facets, not through a table. Its Light Return map shows how it behaves in each stone. ### How accurate is the DG-Cabochon Cut cutting file? We check it facet by facet against the 3D model that it was written from. Every crown and pavilion facet within 0.004° of the 3D model (average under 0.001°). The angles are the ones you set on the machine. The 3D model is the same stone that you render or set. ### How big is the DG-Cabochon Cut model, and what does it weigh? The model measures 6.26 x 5.96 x 6.73 mm, which is 2.00 ct in diamond. At the same size, it weighs 1.83 ct in moissanite, 3.30 ct in cubic zirconia, 2.27 ct in ruby, 2.27 ct in sapphire, 1.55 ct in emerald, 1.51 ct in amethyst. You can scale it uniformly to any size: the weight follows the cube of the size. Twice the size holds eight times the material, so it weighs eight times as much. ### Can I 3D print or cast the DG-Cabochon Cut model? Yes. The mesh is watertight and manifold, with outward normals and no duplicate vertices, so it prints and casts without repair. Use the STEP file when you need the exact faceted solid in CAD. ## More house cuts - [DG-M5 Cut](https://digitalgemology.com/cuts/dg-m5) - [DG-Miliano Cut](https://digitalgemology.com/cuts/dg-miliano) - [DG-Rafaello Cut](https://digitalgemology.com/cuts/dg-rafaello) - [DG-Bowtie Cut](https://digitalgemology.com/cuts/dg-bowtie) - [DG-Elongated Hexagon Cut](https://digitalgemology.com/cuts/dg-elongated-hexagon) - [DG-Octagonal Kite Cut](https://digitalgemology.com/cuts/dg-octagonal-kite) - [Elongated Hexagonal Bipyramid Cut](https://digitalgemology.com/cuts/elongated-hexagonal-bipyramid) ## Get the DG-Cabochon Cut files *6 formats* *Millimeters* *Watertight* ### DG-Cabochon Cut 3D files The DG-Cabochon Cut as exact geometry: 76 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 €14.99 · [Personal use](https://digitalgemology.com/licence) [Buy the 3D files](https://digitalgemology.lemonsqueezy.com/checkout/buy/5b8a47ea-a607-42fd-90b9-f173b98744cd) *GemCad* *120 index* ### DG-Cabochon Cut cutting files The DG-Cabochon Cut as a faceting design: 76 facets, 120 index, 5-fold mirror-image symmetry, ready for the machine. - **.asc** GemCad design file, 120 index gear - **.csv** Tier table: angles, indices and cutting order - **Diagram** Printable faceting diagram €12.99 · [Personal use](https://digitalgemology.com/licence) [Buy the cutting files](https://digitalgemology.lemonsqueezy.com/checkout/buy/203d3a68-5eb3-49e2-a73d-f5046968af8f) 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).