Round Cushion w/Chisel girdle; Charles Covill
- L/W
- 100%
- Design RI
- 1.54
- H/W
- 63%
- Gear
- 96
- V/W³
- 0.222
- Symmetry
- 4 (mirrored)
- Facets
- 81
- Tiers
- 12
- Crown
- 41
- Pavilion
- 40
Covill, Charles; North York FG Newsletter, Jan 1997;
Wireframe
Pavilion
| # | Angle | Facets | Notes |
|---|---|---|---|
| P1 | 50.00° | 222264650707494 | |
| P2 | 48.84° | 618304254667890 | |
| P3 | 45.00° | 618304254667890 | |
| P4 | 45.00° | 222264650707494 | |
| P5 | 41.00° | 816324056648088 |
Crown
| # | Angle | Facets | Notes |
|---|---|---|---|
| C1 | 40.00° | 222264650707494 | |
| C2 | 38.85° | 618304254667890 | |
| C3 | 35.00° | 222264650707494 | |
| C4 | 35.00° | 618304254667890 | |
| C5 | 32.00° | 96244872 | |
| C6 | 28.59° | 12366084 | |
| T | 0.00° | 48 |