DG-Miliano Emerald: Pros, Cons & Scintillation

DG-Miliano was drawn for moissanite: eight stars, eight crown mains and sixteen upper girdle facets over a girdle of ninety-six, with the pavilion in three tiers of sixteen. Counting every tier and the girdle, the measured model comes to 177 facets, 60.3% deep.

Its pavilion figure is 38.3°, the only round on our emerald pages to sit under the 39.4° guide minimum. In our census it trails the T73 on light, 67 against 78, and leaks a third of the light; the diamond version, by contrast, returns 95.

Does DG-Miliano suit emerald? Pros and cons

Pros

Lighter for its width than diamond 0.80 vs 1.03 ct
Sparkle at the top of our scale 98 vs 80

Cons

Almost no fire next to the diamond version 34 vs 82
A third of the light leaks 33 vs 3
Much less light than in diamond 67 vs 95

Compared with the T73 Round Brilliant in emerald and with the DG-Miliano in diamond. A difference counts from 3 points (Brilliance, Fire, Tilt, Leakage), 5 (Scintillation, Symmetry), 2 (Spread) 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.

All eight scores against the T73

At a glance: the DG-Miliano in emerald (white) against the T73 Round Brilliant in emerald (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 emerald: ahead on 3, level on 1, behind on 4.

Global71, the comparison 73, difference −2
Brilliance67, the comparison 78, difference −11
Fire34, the comparison 39, difference −5
Scintillation98, the comparison 80, difference +18
Spread101, the comparison 100, difference +1
Symmetry100, the comparison 100, difference 0
Shape-norm72, the comparison 84, difference −12
Tilt92, the comparison 77, difference +15

Face-up light census, a different measure from the Cut Grading Tool; Spread and Shape-norm above 100 sit on the ring.

Open it in the Cut Performance Wheel

What emerald gains in DG-Miliano

Lighter for its width than diamond

0.80 ct at 6.5 mm, against 1.03 ct for the same cut in diamond (−23%)

A 6.5 mm DG-Miliano weighs 0.80 ct in emerald. Cut from diamond it would be 1.03 ct: the same volume in a denser material.

A DG-Miliano 6.5 mm across, weighed from the model's measured volume and each stone's specific gravity.

Try it yourself: Weights in all seven gemstones on the DG-Miliano page

Sparkle at the top of our scale

Scintillation 98 against 80 for the T73 Round Brilliant in emerald: 18 points higher

Sixteen-facet tiers and the ninety-six-facet girdle break the face into many small facets, and our scintillation score, which follows the facet plan, reads 98. That holds in every stone, so the gain is over the T73 in emerald.

DG-Miliano · 177 facets · Scintillation 98

T73 Round Brilliant · 73 facets · Scintillation 80

Scintillation follows the number of facets: more facets, more and smaller flashes as the stone moves. Count the facets in each crown. Drawn from each cut's own model.

Try it yourself: Compare the Scintillation spoke in the Cut Performance Wheel

The catch with a DG-Miliano emerald

Almost no fire next to the diamond version

Fire 34 against 82 for the DG-Miliano in diamond: 48 points lower

Emerald's dispersion is 0.014; diamond's is 0.044. DG-Miliano scores 82 for fire in diamond, among the highest of the rounds, and 34 in emerald, below the T73's 39.

Dg-miliano in emerald face-up under a single bright light: a render from our simulator, its coloured flashes are the fire (score 34) — Look at the coloured flashes: those are fire. Same light, same size, same face-up angle; rendered by our 3D Gemstone Simulator from each cut's own model.

Dg-miliano in diamond face-up under a single bright light: a render from our simulator, its coloured flashes are the fire (score 82) — Look at the coloured flashes: those are fire. Same light, same size, same face-up angle; rendered by our 3D Gemstone Simulator from each cut's own model.

Try it yourself: See the fire in the 3D Gemstone Simulator

A third of the light leaks

Leakage 33 against 3 for the DG-Miliano in diamond: 30 points higher

In our census 33% escapes through the pavilion, against 22% for the T73 in emerald and 3% for the same cut in diamond. The shallowest tier, near the point, is the likeliest place for light to slip past emerald's 39.4° critical angle.

Dg-miliano in emerald tilted 0 degrees: Light Return map, 30% of the face leaking — Each frame is the Light Return map with the stone tilted away from you by the angle shown; grey is light leaving through the pavilion. The share under each frame is that picture's own.

Dg-miliano in emerald tilted 10 degrees: Light Return map, 40% of the face leaking — Each frame is the Light Return map with the stone tilted away from you by the angle shown; grey is light leaving through the pavilion. The share under each frame is that picture's own.

What helps: The pavilion figure, 38.3°, is under emerald's 39.4° guide minimum, but we have not measured a steeper DG-Miliano, so we cannot promise what it would do. A measured alternative: DG-Vitruvio Emerald leaks 22% with the same scintillation.

Try it yourself: Tilt it yourself in the simulator's light map

Much less light than in diamond

Brilliance 67 against 95 for the DG-Miliano in diamond: 28 points lower

The three-tier pavilion works in diamond, where it returns 95. In emerald it returns 67, under the T73's 78 as well.

Dg-miliano in emerald face-up Light Return map: red, green and blue show where the light returns from, grey shows where it leaks (Brilliance 67) — Red, green and blue = light returning to the eye; grey = light leaving through the pavilion. 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.

Dg-miliano in diamond face-up Light Return map: red, green and blue show where the light returns from, grey shows where it leaks (Brilliance 95) — Red, green and blue = light returning to the eye; grey = light leaving through the pavilion. 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: For the most light in a round emerald, DG-M5 Emerald at 90; for the same fine sparkle with the T73's light, DG-Vitruvio Emerald (78).

Try it yourself: Open this Light Return map in the simulator

Who a DG-Miliano emerald suits

DG-Miliano in emerald is for someone who values a fine, busy sparkle over light. Its scintillation is the top of the scale; its light ranks seventh of the ten rounds on our emerald pages.

DG-Vitruvio Emerald matches its sparkle (98) with more light; DG-M5 Emerald gives the most light of all.

DG-Miliano Emerald: questions

Is DG-Miliano a good cut for emerald?

For sparkle, yes: scintillation 98. For light, it trails: Brilliance 67 against 78 for the T73 in emerald.

DG-Miliano or DG-Vitruvio for an emerald?

DG-Vitruvio: the same scintillation (98), more light (78 against 67) and less leakage (22% against 33%).

Why does DG-Miliano lose more light in emerald than in diamond?

Emerald's critical angle is 39.4°, diamond's 24.4°, so light that diamond would reflect passes out through the pavilion: 33% here, 3% in diamond.

Get the DG-Miliano Cut files

6 formatsMillimetresWatertight

DG-Miliano Cut 3D files

The DG-Miliano Cut as exact geometry: 177 planar facets, real-world scale, ready for CAD, rendering, printing and casting.

STEPExact faceted solid for CAD
3DMRhino, closed mesh on its own layer
STLWatertight mesh for printing and casting
OBJMesh for modelling and rendering
FBXBlender, 3ds Max, Maya, Cinema 4D, Unity, Unreal
GLBWeb, AR and quick previews

€9.99 · Personal useBuy the 3D files

GemCad96 index

DG-Miliano Cut cutting files

The DG-Miliano Cut as a faceting design: 81 + 96 girdles = 177 facets, 96 index, 8-fold mirror-image symmetry, ready for the machine.

.ascGemCad design file, 96 index gear
.csvTier table: angles, indices and cutting order
DiagramPrintable faceting diagram

€9.99 · Personal useBuy the cutting files

Questions before you buy? Email us.

More gemstones and cuts

Emerald: optical properties and the top ten cuts · The DG-Miliano: specifications, model and files

DG-Miliano Emerald: sparkle at the top of our scale, from a three-tier pavilion