| Grade | Color Shade | Description |
|---|---|---|
| N | WH/OF WH/YL | -- |
| NV | Brown/Gray /Pink | None Visible |
| BRN1 | Brown | Faint |
| BRN2 | Brown | Light |
| BRN3 | Brown | Dark |
| IF, VVS1, VVS2, VS1, VS2, SI1, SI2, SI3, I1, I2, I3, LC, LOUPE CLEAN, P1, P2, P3, N, FL |
| FL Grades | Parameters |
|---|---|
| N | None Fluroescence |
| FNT | Faint Fluroescence |
| MED | Medium Fluroescence |
| STG | Strong Fluroescence |
| VST | Very Strong Fluroescence |
| Grades | Description |
|---|---|
| GIA | Gemological Institute of America |
| IGI | International Gemological Institute |
| HRD | Hoge Raad voor Diamant |
| AGS | American Gem Society |
| CUT Grades | Description |
|---|---|
| EX | Excellent |
| VG | Very Good |
| GD | Good |
| F | Fair |
| Polish | Description |
|---|---|
| EX | Excellent |
| VG | Very Good |
| GD | Good |
| F | Fair |
| Symmetry | Description |
|---|---|
| EX | Excellent |
| VG | Very Good |
| GD | Good |
| F | Fair |
