Proportions charts for Princess Cut
| Ideal Cut | Premium Cut | International Fine Trade Cut | US domestic Average Cut | Below Average Cut | ||||
| Cut classes | Class 1A | Class 1B | Class 2A | Class 2B | Class 3A | Class 3B | Class 4A | Class 4B |
| Table, % | 62-68 | 68.1-71 61.9-60 |
71.1-72 59.9-59.0 |
72.1-77.0 58.9-58 |
77.1-82.0 57.9-56.0 |
82.1-85.0 55.9-53.0 |
85.1-88.0 52.9-50.0 |
> 88.0 < 50.0 |
| Crown height, % | 9-10 | 8.9-8.5 10.1-11 |
8.4-8.0 11.1-11.5 |
7.9-6.0 11.6-13.0 |
5.9-5.0 13.1-15.0 |
4.9-4.0 15.1-17.5 |
3.9-3.1 17.6-18.5 |
<3 >18.5 |
| Girdle Thikness, % Word description and percentages |
Thin to Medium or Medium to Thick 1% to 3.0% or 1.7% to 5.5% | Thin to Thick 1% to 5.5% > more variance | Very thin to Very thick 0.4% to 7.0% | Extremely thin to Extremely thick 0% to > 7.0% | ||||
| Total Depth, % Determined by factors already considered above |
64-75 | 75.1-80.0 63.9-58.0 |
80.1-83.0 57.9-57.0 |
83.1-84.0 56.9-56.0 |
84.1-85.0 55.9-53.0 |
>85 <53 |
||
| Polish/Symmetry | Excellent to Good | Good or Fair | Poor | |||||
| Square range Length/Width ratios (Preferences only) |
0.95-1.05 | |||||||
| Rectangular range Length/Width ratios (Preferences only) |
1.5-1.75 | 1.49-1.06 1.76-1.99 |
> Class 3 < Class 3 |
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