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The AGSL Diamond Cut Grading System
The AGSL Cut Grading System is based upon light performance, proportion and finish characteristics to determine a diamonds fire and brilliance. A combination of 11 different criteria are used in these 3 caragories to determine a diamonds cut grade.
The AGSL Cut Grades are Ideal, Excellent, Very Good, Good, Fair and Poor
| AGSL Diamond Cut Grading System | ||
|---|---|---|
| Light Performance | Proportion Factors | Finish |
| Brightness | Girdle | |
| Dispersion | Culet Size | Polish |
| Leakage | Spread | Symmetry |
| Contrast | Durability | |
| Tilt | ||
For more information about the American Gem Society(AGS)
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