DG-Elongated Hexagon Ruby: Pros, Cons & Fire

Both faces of DG-Elongated Hexagon are cut alike, two steps each side of a six-facet girdle, with the table in front matched by an equal flat behind. It was drawn for emerald and finished on both faces, so it reads the same from either side. The model has 32 facets and a 50.0% table, with crown and back both cut at 36.0°, and it is only 45.3% deep.

Its back flat is a window by design: the cut page leaves it out of its head-on figures, but the census counts the light through it as lost, which pulls the brilliance here down and the leakage up.

Even so, in ruby it is second only to the oval for fire.

Is DG-Elongated Hexagon good in ruby? Pros and cons

Pros

Nearly twice the fire of a round ruby 72 vs 37
A little more face for its weight 107 vs 100

Cons

Under a third of a round's light, window included 27 vs 94
Nearly two-thirds of the light leaks 64 vs 5
Loses light as it tips, where the diamond does not 56 vs 100
Fewer flashes than a round 51 vs 80

Compared with the T73 Round Brilliant in ruby and with the DG-Elongated Hexagon 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.

All eight scores against the T73

At a glance: the DG-Elongated Hexagon in ruby (white) against the T73 Round Brilliant in ruby (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 ruby: ahead on 2, behind on 6.

Global48, the comparison 79, difference −31
Brilliance27, the comparison 94, difference −67
Fire72, the comparison 37, difference +35
Scintillation51, the comparison 80, difference −29
Spread111, the comparison 100, difference +11
Symmetry73, the comparison 100, difference −27
Shape-norm35, the comparison 102, difference −67
Tilt56, the comparison 75, difference −19

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

What ruby gains in DG-Elongated Hexagon

Nearly twice the fire of a round ruby

Fire 72 against 37 for the T73 Round Brilliant in ruby: 35 points higher

Few, broad steps and a table on both faces give light long, simple paths, and the census finds a large share of what comes back split into colour. In diamond the same design scores 97.

Dg-elongated hexagon in ruby face-up under a single bright light: a render from our simulator, its coloured flashes are the fire (score 72) — 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.

T73 round brilliant in ruby face-up under a single bright light: a render from our simulator, its coloured flashes are the fire (score 37) — 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 little more face for its weight

Face-up size 107 against 100 for the T73 Round Brilliant in ruby (T73 = 100): 7% more face-up area for the same weight

Measured from the outline, a carat of this shallow, 45.3% deep design covers slightly more area than a carat of T73.

DG-Elongated Hexagon · 8.71 x 5.12 mm at 1.00 ct · Face-up size 107

T73 Round Brilliant · 6.21 mm at 1.00 ct · Face-up size 100

Both stones weigh 1.00 ct in ruby and are drawn to the same scale in millimetres, from each cut's own model. Face-up size is the outline's area per carat, with the T73 at 100: a deeper stone, or a rounder outline, spreads less area for its weight.

Try it yourself: See its size at 1.00 ct in ruby in the 3D Gemstone Simulator

DG-Elongated Hexagon's costs in ruby

Under a third of a round's light, window included

Brilliance 27 against 94 for the T73 Round Brilliant in ruby: 67 points lower

The census counts light through the back flat as lost, so part of the shortfall is the window doing what it was drawn to do. The steps also lie at 36.0°, just above ruby's 34.6° critical angle and below the 36.4° guide minimum for round designs.

Dg-elongated hexagon in ruby face-up Light Return map: red, green and blue show where the light returns from, grey shows where it leaks (Brilliance 27) — 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.

T73 round brilliant in ruby face-up Light Return map: red, green and blue show where the light returns from, grey shows where it leaks (Brilliance 94) — 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: The window is part of the design, and we have not measured it at other angles. For an elongated ruby with more light, the Oval Cut Ruby returns 66; for the most, DG-M5 Ruby returns 100.

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

Nearly two-thirds of the light leaks

Leakage 64 against 5 for the T73 Round Brilliant in ruby: 59 points higher

64% leaves through the back in our census, the window included; the T73 loses 5%. Only the radiant leaks more in ruby.

Dg-elongated hexagon in ruby tilted 0 degrees: Light Return map, 68% 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-elongated hexagon in ruby tilted 10 degrees: Light Return map, 68% 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: A closed back would be a different stone, and every size leaks the same share. DG-M5 Ruby lets out 0%.

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

Loses light as it tips, where the diamond does not

Tilt 56 against 100 for the DG-Elongated Hexagon in diamond: 44 points lower

Tipped by 20°, the ruby keeps 56% of its face-up light; the same design in diamond keeps 100%. The diamond starts from less, 12 for brilliance, but holds all of it.

What helps: Of the ruby cuts that keep close to the T73's light, DG-Rafaello Ruby holds 81 when tipped.

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

Fewer flashes than a round

Scintillation 51 against 80 for the T73 Round Brilliant in ruby: 29 points lower

32 broad step facets against the T73's 73: a calm, architectural pattern.

DG-Elongated Hexagon · 32 facets · Scintillation 51

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

Who DG-Elongated Hexagon in ruby suits

Choose DG-Elongated Hexagon in ruby for a pendant or open setting where both faces show and colour matters more than light. In ruby it shows strong fire, 72, but loses most of its light.

For an elongated ruby with more light, the Oval Cut Ruby or the Emerald Cut Ruby, which return 66 and 65. For the most light, DG-M5 Ruby.

DG-Elongated Hexagon Ruby: questions

Why does DG-Elongated Hexagon leak so much light?

The back flat is left open by design, as a window, and the census books every ray through it as lost. With that counted, 64% leaks in ruby, against 5% for the T73.

Can DG-Elongated Hexagon be seen from both sides?

Yes. Front and back are cut to match, the table answered by a flat of equal size, which is why we draw it for pendants and open settings.

Is DG-Elongated Hexagon good for ruby?

For fire, yes: 72, second only to the oval among the ruby cuts we measure. For light, no: Brilliance 27.

Get the DG-Elongated Hexagon Cut files

6 formatsMillimetresWatertight

DG-Elongated Hexagon Cut 3D files

The DG-Elongated Hexagon Cut as exact geometry: 32 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-Elongated Hexagon Cut cutting files

The DG-Elongated Hexagon Cut as a faceting design: 26 + 6 girdles = 32 facets, 96 index, 2-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.

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