DG-Elongated Hexagon Cubic Zirconia: the most fire we measure here, from very little light
Brilliance 16 · Fire 97 · Scintillation 51 · in our census, where the T73 scores 98 · 87 · 80 in cubic zirconia
Finished alike front and back, with a back flat that is a window by design. In CZ it scores the highest fire and the lowest brilliance we measure, and the census counts the light through that window as lost.
Rendered in our 3D Gemstone Simulator from the DG-Elongated Hexagon model, 1.00 ct, studio light.
DG-Elongated Hexagon Cubic Zirconia
DG-Elongated Hexagon is an elongated hexagon with square points, 1.7 to 1, step cut alike on both faces: two steps either side of a six-facet girdle, a 50.0% table in front and a flat of the same size behind. It has 32 facets and is 45.3% deep, the shallowest cut in our CZ census.
Census note: its back flat is a window by design. The cut page leaves it out of the head-on figures, and the census counts the light through it as lost. Read its brilliance and leakage with that in mind.
It was drawn for emerald, and its two finished faces suit pendants and open settings where the back is on show.
Is DG-Elongated Hexagon a good cut for cubic zirconia? Pros and cons
Compared with the T73 Round Brilliant in cubic zirconia 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 cubic zirconia (white) against the T73 Round Brilliant in cubic zirconia (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 cubic zirconia: ahead on 2, behind on 6.
Global53, the comparison 93, difference −40
Brilliance16, the comparison 98, difference −82
Fire97, the comparison 87, difference +10
Scintillation51, the comparison 80, difference −29
Spread111, the comparison 100, difference +11
Symmetry73, the comparison 100, difference −27
Shape-norm22, the comparison 106, difference −84
Tilt80, the comparison 87, difference −7
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.
Fire 97 against 87 for the T73 Round Brilliant in cubic zirconia: 10 points higher
Fire 97 tops every cut in our CZ census and matches the same design in diamond, 97. It is colour from a small amount of light: with Brilliance at 16, little of what enters comes back to the eye at all.
DG-Elongated Hexagon in cubic zirconia · Fire 97
T73 Round Brilliant in cubic zirconia · Fire 87
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.
Face-up size 107 against 100 for the T73 Round Brilliant in cubic zirconia (T73 = 100): 7% more face-up area for the same weight
Measured from its outline, it covers 107 per carat against the T73's 100. At 45.3% deep it carries less weight under its face than the round, at 61.7%.
DG-Elongated Hexagon · 7.69 x 4.52 mm at 1.00 ct · Face-up size 107
T73 Round Brilliant · 5.49 mm at 1.00 ct · Face-up size 100
Both stones weigh 1.00 ct in cubic zirconia 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.
Brilliance 16 against 98 for the T73 Round Brilliant in cubic zirconia: 82 points lower
Brilliance 16 against 98 for the T73. The census counts the light through the back window as lost, and that flat is as large as the table.
DG-Elongated Hexagon in cubic zirconia · Brilliance 16
T73 Round Brilliant in cubic zirconia · Brilliance 98
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 the design; closing it would make a different cut. Among long step outlines in CZ, the Emerald Cut Cubic Zirconia keeps far more light: 59.
Leakage 69 against 1 for the T73 Round Brilliant in cubic zirconia: 68 points higher
69% in our census, the highest share of any cut we measure in CZ; the diamond version loses 73%. Rays that meet the back flat square on pass straight through it.
DG-Elongated Hexagon in cubic zirconia · Leakage 69
0° · 74% leak
10° · 74% leak
20° · 75% leak
30° · 66% leak
T73 Round Brilliant in cubic zirconia · Leakage 1
0° · 0% leak
10° · 1% leak
20° · 9% leak
30° · 21% leak
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: Size changes nothing, and the window stays a window. The Emerald Cut Cubic Zirconia leaks 25%.
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.
What helps: This is the step plan. For more sparkle in a long outline, the Marquise Cut Cubic Zirconia scores 86.
Choose DG-Elongated Hexagon for a pendant or an open setting where both faces show, and for colour rather than light. By our measure it is a weak stone for light in CZ, partly by design.