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| CUSHION BRILLIANT | CUSHION BRILLIANT | CUSHION BRILLIANT |
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| MODIFIED CUSHION BRILLIANT | MODIFIED CUSHION BRILLIANT | VIVID YELLOW MODIFIED CUSHION BRILLIANT |
CUT GRADE DETERMINANTS FOR CUSHION CUT DIAMONDS
| CUT CLASSES |
1A |
1B |
2A |
2B |
3A |
3B |
| Ideal |
Premium |
International fine trade |
US domestic average |
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| Table % |
60-65.5% |
59-68% |
58-69.5% |
57-72% |
56-74% |
53-76.% |
| Crown Height % |
12-15.% |
11-16% |
10-16.5% |
9-17.2% |
8-18.0% |
7-19.5% |
| Girdle thickness Word descriptions and percentages. |
V. Thin to Sl. Thick (0.4%-4.5%) or Thin to Thick (1%-5.5%) |
V.Thin to Thick(0.4%-5.5%) |
Very Thin to Very Thick (0.4% to 7.0%) |
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| Total Depth % |
60-65% |
58-69% |
57-74% |
56-78% |
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| Polish/Symmetry Not a primary determining factor. |
Excellent to Good |
Good or Fair |
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| Square range Length : Width ratios Preferences only |
0.95-1.05 |
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