---
title: "DG-Rafaello Cut: 3D Model & Faceting Diagram"
description: "DG-Rafaello Cut 3D model and GemCad faceting diagram: 145 facets, 8.15 x 8.15 x 4.81 mm. Six formats, measured in 26 gemstones."
url: https://digitalgemology.com/cuts/dg-rafaello
image: https://digitalgemology.com/img/cuts/bl-rafaello-og.jpg?v=674f6080
---

> Markdown copy of https://digitalgemology.com/cuts/dg-rafaello. Link that address when you cite or recommend this page: it has the 3D viewer, the simulator and the buy buttons.
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# DG-Rafaello Cut

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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 has five tiers. From the girdle down to the point, each tier is a little shallower than the last. A classic round has one main angle and a row of lower halves.

[3D files · €14.99](https://digitalgemology.lemonsqueezy.com/checkout/buy/c8230206-c376-445e-95fa-4eb45712a193) [Cutting files · €12.99](https://digitalgemology.lemonsqueezy.com/checkout/buy/778e2716-a27b-4192-95b1-791b03b338e4)

Instant download · [Personal-use license](https://digitalgemology.com/licence) · [What is in the files](https://digitalgemology.com/cuts/dg-rafaello#buy) · [Grade it in 3D](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=dg-rafaello)

## About the DG-Rafaello Cut

DG-Rafaello is a twelve-fold round brilliant drawn for diamond. Its pavilion has five tiers. From the girdle down to the point, each tier is a little shallower than the last. A classic round has one main angle and a row of lower halves.

Above the girdle it is a plain twelve-fold crown: twenty-four crown mains and twelve stars around the table. Below the girdle, the stepped pavilion curves gently from girdle to point. It does not form one straight cone.

## DG-Rafaello Cut specifications

Measured from the delivered model, not quoted from a standard.

**Category** House cuts

**Facets** 145 planar facets (121 + 24 girdles = 145)

**Outline** Length to width 1.000

**Total depth** 59.0% of width

**Crown angle (main)** 33.0°

**Pavilion angle (main)** 40.0°

**Reference size** 8.15 x 8.15 x 4.81 mm at 1.85 ct in diamond

**Volume** 105.36 mm³

**Cutting file accuracy** Every crown and pavilion facet within 0.015° of the 3D model (average under 0.001°)

**Index gear** 96

**Symmetry** 12-fold mirror-image symmetry

**Tiers** 2 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-Rafaello Cut*

Face-up: the crown facets, drawn from the model's own edges.

*Side profile of the DG-Rafaello Cut*

Profile: 59.0% total depth.

![Light Return map of the DG-Rafaello Cut in diamond: a computed render showing direct, indirect and contrast light across the face-up stone.](https://digitalgemology.com/img/cuts/bl-rafaello-lightmap.webp?v=74279a59)

Light Return map of the DG-Rafaello Cut in diamond. A computed render of the model's geometry, not a photograph.

## Cut Performance Index

- Diamond **92.6** overall, 2nd of 37
- Moissanite **90.7** overall, 9th of 37
- Cubic Zirconia **95.0** overall, 1st of 37
- Ruby **75.2** overall, joint 11th of 37
- Sapphire **75.2** overall, joint 11th of 37
- Emerald **64.7** overall, 17th of 37
- Amethyst **60.7** overall, 21st of 37

### Also scored in 19 more gemstones

- Topaz **68.7** overall, 17th of 37
- Spinel **74.9** overall, joint 13th of 37
- Demantoid **90.8** overall, 3rd of 37
- Zircon **89.8** overall, joint 2nd of 37
- Tourmaline **71.0** overall, 16th of 37
- Peridot **73.6** overall, 14th of 37
- Tanzanite **73.7** overall, 14th of 37
- YAG **81.5** overall, 9th of 37
- Pyrope **76.6** overall, 12th of 37
- Almandine **79.5** overall, 12th of 37
- Spessartine **80.5** overall, 11th of 37
- Grossular **78.7** overall, 12th of 37
- Chrysoberyl **73.6** overall, 11th of 37
- Kunzite **72.3** overall, 14th of 37
- Iolite **63.5** overall, joint 21st of 37
- Morganite **65.6** overall, 17th of 37
- GGG **91.2** overall, 3rd of 37
- Strontium titanate **94.9** overall, 4th of 37
- Synthetic rutile **90.5** overall, 4th of 37

[See how every cut compares](https://digitalgemology.com/learn/cut-performance-index)

## How the DG-Rafaello Cut performs in seven gemstones

**The DG-Rafaello Cut performs best in cubic zirconia, where its brilliance and fire together are highest: 100 for brilliance and 87 for fire.** Its fire peaks in moissanite, at 90. In diamond it scores 94 for brilliance and 80 for fire, against 93 and 78 for the T73 benchmark. Its scintillation, 96, comes from its pattern of facets, so it is the same in every stone.

**Brilliance, fire and scintillation of the DG-Rafaello Cut in seven gemstones, out of 100, with the T73 Round Brilliant benchmark in each**

| Gemstone | Brilliance | Fire | Scintillation |
| --- | --- | --- | --- |
| [Diamond](https://digitalgemology.com/gemstones/diamond) | 94 (T73 benchmark 93) | 80 (T73 benchmark 78) | 96 (T73 benchmark 80) |
| [Moissanite](https://digitalgemology.com/gemstones/moissanite) *Highest fire* | 84 (T73 benchmark 86) | 90 (T73 benchmark 97) | 96 (T73 benchmark 80) |
| [Cubic Zirconia](https://digitalgemology.com/gemstones/cubic-zirconia) *Best overall* *Highest brilliance* | 100 (T73 benchmark 98) | 87 (T73 benchmark 87) | 96 (T73 benchmark 80) |
| [Ruby](https://digitalgemology.com/gemstones/ruby) | 85 (T73 benchmark 94) | 25 (T73 benchmark 37) | 96 (T73 benchmark 80) |
| [Sapphire](https://digitalgemology.com/gemstones/sapphire) | 85 (T73 benchmark 94) | 25 (T73 benchmark 37) | 96 (T73 benchmark 80) |
| [Emerald](https://digitalgemology.com/gemstones/emerald) | 54 (T73 benchmark 78) | 28 (T73 benchmark 39) | 96 (T73 benchmark 80) |
| [Amethyst](https://digitalgemology.com/gemstones/amethyst) | 45 (T73 benchmark 72) | 26 (T73 benchmark 36) | 96 (T73 benchmark 80) |

Score out of 100 T73 Round Brilliant, our benchmark, in the same stone **Best overall:** the highest brilliance and fire together

Brilliance is the share of face-up light that the stone returns. Fire is the share of that light that splits into color. Both come from our face-up light census. Scintillation is the sparkle that the facets give as the stone moves, and we read it from its facets. They are the same figures as the [Cut Performance Wheel](https://digitalgemology.com/tools/cut-performance-wheel?cut=dg-rafaello&stone=cubic-zirconia), where you can compare the DG-Rafaello Cut with any other cut. A simulation of the geometry, not a grading report.

Also scored, with the same census, in 19 more gemstones: [topaz](https://digitalgemology.com/gemstones/topaz/dg-rafaello), [spinel](https://digitalgemology.com/gemstones/spinel/dg-rafaello), [demantoid](https://digitalgemology.com/gemstones/demantoid/dg-rafaello), [zircon](https://digitalgemology.com/gemstones/zircon/dg-rafaello), [tourmaline](https://digitalgemology.com/gemstones/tourmaline/dg-rafaello), [peridot](https://digitalgemology.com/gemstones/peridot/dg-rafaello), [tanzanite](https://digitalgemology.com/gemstones/tanzanite/dg-rafaello), [YAG](https://digitalgemology.com/gemstones/yag/dg-rafaello), [pyrope](https://digitalgemology.com/gemstones/pyrope/dg-rafaello), [almandine](https://digitalgemology.com/gemstones/almandine/dg-rafaello), [spessartine](https://digitalgemology.com/gemstones/spessartine/dg-rafaello), [grossular](https://digitalgemology.com/gemstones/grossular/dg-rafaello), [chrysoberyl](https://digitalgemology.com/gemstones/chrysoberyl/dg-rafaello), [kunzite](https://digitalgemology.com/gemstones/kunzite/dg-rafaello), [iolite](https://digitalgemology.com/gemstones/iolite/dg-rafaello), [morganite](https://digitalgemology.com/gemstones/morganite/dg-rafaello), [GGG](https://digitalgemology.com/gemstones/ggg/dg-rafaello), [strontium titanate](https://digitalgemology.com/gemstones/strontium-titanate/dg-rafaello) and [synthetic rutile](https://digitalgemology.com/gemstones/synthetic-rutile/dg-rafaello). Their head-on figures are in the table below.

### Head-on reflection, 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. For each stone, we measured how much of the pavilion of this model, seen face-down, is steeper than that angle. We also measured what the model weighs at its reference size. The pavilion mains of this design sit at 40.0°. A round design needs at least 40.4° in amethyst for head-on light to reflect off both sides of the pavilion and leave through the table. So it is worth making the mains steeper for amethyst.

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° | 100% | 1.85 ct | Holds head-on light |
| [Moissanite](https://digitalgemology.com/gemstones/moissanite) | 2.648 to 2.691 | 22.2° | 100% | 1.70 ct | Holds head-on light |
| [Cubic Zirconia](https://digitalgemology.com/gemstones/cubic-zirconia) | 2.15 to 2.18 | 27.7° | 100% | 3.06 ct | Holds head-on light |
| [Ruby](https://digitalgemology.com/gemstones/ruby) | 1.762 to 1.770 | 34.6° | 100% | 2.11 ct | Holds head-on light |
| [Sapphire](https://digitalgemology.com/gemstones/sapphire) | 1.762 to 1.770 | 34.6° | 100% | 2.11 ct | Holds head-on light |
| [Emerald](https://digitalgemology.com/gemstones/emerald) | 1.577 to 1.583 | 39.4° | 100% | 1.43 ct | Holds head-on light |
| [Amethyst](https://digitalgemology.com/gemstones/amethyst) | 1.544 to 1.553 | 40.4° | 82% | 1.40 ct | Steepen the pavilion |
| [Topaz](https://digitalgemology.com/gemstones/topaz) | 1.606 to 1.644 | 38.5° | 100% | 1.86 ct | Holds head-on light |
| [Spinel](https://digitalgemology.com/gemstones/spinel) | 1.712 to 1.747 | 35.7° | 100% | 1.91 ct | Holds head-on light |
| [Demantoid](https://digitalgemology.com/gemstones/demantoid) | 1.881 to 1.888 | 32.1° | 100% | 2.03 ct | Holds head-on light |
| [Zircon](https://digitalgemology.com/gemstones/zircon) | 1.925 to 1.984 | 31.3° | 100% | 2.46 ct | Holds head-on light |
| [Tourmaline](https://digitalgemology.com/gemstones/tourmaline) | 1.603 to 1.655 | 38.6° | 100% | 1.65 ct | Holds head-on light |
| [Peridot](https://digitalgemology.com/gemstones/peridot) | 1.650 to 1.690 | 37.3° | 100% | 1.76 ct | Holds head-on light |
| [Tanzanite](https://digitalgemology.com/gemstones/tanzanite) | 1.685 to 1.707 | 36.4° | 100% | 1.76 ct | Holds head-on light |
| [YAG](https://digitalgemology.com/gemstones/yag) | 1.833 | 33.1° | 100% | 2.40 ct | Holds head-on light |
| [Pyrope](https://digitalgemology.com/gemstones/pyrope) | 1.730 to 1.766 | 35.3° | 100% | 1.98 ct | Holds head-on light |
| [Almandine](https://digitalgemology.com/gemstones/almandine) | 1.750 to 1.830 | 34.8° | 100% | 2.17 ct | Holds head-on light |
| [Spessartine](https://digitalgemology.com/gemstones/spessartine) | 1.790 to 1.830 | 34.0° | 100% | 2.19 ct | Holds head-on light |
| [Grossular](https://digitalgemology.com/gemstones/grossular) | 1.730 to 1.760 | 35.3° | 100% | 1.92 ct | Holds head-on light |
| [Chrysoberyl](https://digitalgemology.com/gemstones/chrysoberyl) | 1.746 to 1.755 | 34.9° | 100% | 1.96 ct | Holds head-on light |
| [Kunzite](https://digitalgemology.com/gemstones/kunzite) | 1.660 to 1.676 | 37.0° | 100% | 1.68 ct | Holds head-on light |
| [Iolite](https://digitalgemology.com/gemstones/iolite) | 1.542 to 1.551 | 40.4° | 82% | 1.37 ct | Steepen the pavilion |
| [Morganite](https://digitalgemology.com/gemstones/morganite) | 1.572 to 1.600 | 39.5° | 100% | 1.50 ct | Holds head-on light |
| [GGG](https://digitalgemology.com/gemstones/ggg) | 1.970 | 30.5° | 100% | 3.71 ct | Holds head-on light |
| [Strontium titanate](https://digitalgemology.com/gemstones/strontium-titanate) | 2.409 | 24.5° | 100% | 2.70 ct | Holds head-on light |
| [Synthetic rutile](https://digitalgemology.com/gemstones/synthetic-rutile) | 2.616 to 2.903 | 22.5° | 100% | 2.24 ct | Holds head-on light |

Head-on light, first reflection. The [3D Gemstone Simulator](https://digitalgemology.com/tools/3d_gemstone_simulator?cut=dg-rafaello) traces the full Light Return in each of these gemstones.

## Available in…

The DG-Rafaello stone by stone: what each gemstone gains and loses in this cut, measured.

- [Diamond](https://digitalgemology.com/gemstones/diamond/dg-rafaello)
- [Moissanite](https://digitalgemology.com/gemstones/moissanite/dg-rafaello)
- [Cubic Zirconia](https://digitalgemology.com/gemstones/cubic-zirconia/dg-rafaello)
- [Ruby](https://digitalgemology.com/gemstones/ruby/dg-rafaello)
- [Sapphire](https://digitalgemology.com/gemstones/sapphire/dg-rafaello)
- [Emerald](https://digitalgemology.com/gemstones/emerald/dg-rafaello)
- [Amethyst](https://digitalgemology.com/gemstones/amethyst/dg-rafaello)
- [Topaz](https://digitalgemology.com/gemstones/topaz/dg-rafaello)
- [Spinel](https://digitalgemology.com/gemstones/spinel/dg-rafaello)
- [Demantoid](https://digitalgemology.com/gemstones/demantoid/dg-rafaello)
- [Zircon](https://digitalgemology.com/gemstones/zircon/dg-rafaello)
- [Tourmaline](https://digitalgemology.com/gemstones/tourmaline/dg-rafaello)
- [Peridot](https://digitalgemology.com/gemstones/peridot/dg-rafaello)
- [Tanzanite](https://digitalgemology.com/gemstones/tanzanite/dg-rafaello)
- [YAG](https://digitalgemology.com/gemstones/yag/dg-rafaello)
- [Pyrope](https://digitalgemology.com/gemstones/pyrope/dg-rafaello)
- [Almandine](https://digitalgemology.com/gemstones/almandine/dg-rafaello)
- [Spessartine](https://digitalgemology.com/gemstones/spessartine/dg-rafaello)
- [Grossular](https://digitalgemology.com/gemstones/grossular/dg-rafaello)
- [Chrysoberyl](https://digitalgemology.com/gemstones/chrysoberyl/dg-rafaello)
- [Kunzite](https://digitalgemology.com/gemstones/kunzite/dg-rafaello)
- [Iolite](https://digitalgemology.com/gemstones/iolite/dg-rafaello)
- [Morganite](https://digitalgemology.com/gemstones/morganite/dg-rafaello)
- [GGG](https://digitalgemology.com/gemstones/ggg/dg-rafaello)
- [Strontium titanate](https://digitalgemology.com/gemstones/strontium-titanate/dg-rafaello)
- [Synthetic rutile](https://digitalgemology.com/gemstones/synthetic-rutile/dg-rafaello)

![DG-Rafaello Cut 3D model](https://digitalgemology.com/img/cuts/bl-rafaello-3d.webp?v=445ad1d1)

## Grade the DG-Rafaello 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-rafaello)

## DG-Rafaello Cut: questions

### What files come with the DG-Rafaello 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 145 planar facets.

### Is there a faceting diagram for the DG-Rafaello Cut?

Yes. The cutting files contain a GemCad .asc design (121 + 24 girdles = 145 facets, 96 index, 12-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-Rafaello Cut work in sapphire, emerald or amethyst?

We measured the pavilion of this model against the critical angle of each stone. In Diamond, Moissanite, Cubic Zirconia, Ruby, Sapphire, Emerald, the whole pavilion reflects head-on light. In Amethyst, part of the pavilion lets light out of the back, so we advise a steeper pavilion. The pavilion mains of this design sit at 40.0°. A round design needs at least 40.4° in amethyst for head-on light to reflect off both sides of the pavilion and leave through the table. So it is worth making the mains steeper for amethyst.

### How accurate is the DG-Rafaello Cut cutting file?

We check it facet by facet against the 3D model that it was written from. Every crown and pavilion facet within 0.015° 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-Rafaello Cut model, and what does it weigh?

The model measures 8.15 x 8.15 x 4.81 mm, which is 1.85 ct in diamond. At the same size, it weighs 1.70 ct in moissanite, 3.06 ct in cubic zirconia, 2.11 ct in ruby, 2.11 ct in sapphire, 1.43 ct in emerald, 1.40 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-Rafaello 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-Bowtie Cut](https://digitalgemology.com/cuts/dg-bowtie)
- [DG-Elongated Hexagon Cut](https://digitalgemology.com/cuts/dg-elongated-hexagon)
- [DG-Cabochon Cut](https://digitalgemology.com/cuts/dg-cabochon)
- [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-Rafaello Cut files

*6 formats* *Millimeters* *Watertight*

### DG-Rafaello Cut 3D files

The DG-Rafaello Cut as exact geometry: 145 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/c8230206-c376-445e-95fa-4eb45712a193)

*GemCad* *96 index*

### DG-Rafaello Cut cutting files

The DG-Rafaello Cut as a faceting design: 121 + 24 girdles = 145 facets, 96 index, 12-fold mirror-image symmetry, ready for the machine.

- **.asc** GemCad design file, 96 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/778e2716-a27b-4192-95b1-791b03b338e4)

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).