August 30 Octagon Cut by Charles Covill
- L/W
- 130%
- Design RI
- 1.76
- H/W
- 80%
- Gear
- 96
- V/W³
- 0.470
- Symmetry
- 2 (mirrored)
- Facets
- 57
- Tiers
- 19
- Crown
- 8
- Pavilion
- 49
Covill, Charles W; Lapidary Journal, Aug 1999, p71;
Wireframe
Pavilion
| # | Angle | Facets | Notes |
|---|---|---|---|
| G1 | 90.00° | 9648 | |
| G2 | 90.00° | 12366084 | |
| G3 | 90.00° | 2472 | |
| P1 | 60.00° | 9648 | |
| P2 | 55.00° | 2472 | |
| P3 | 39.24° | 10385886 | |
| P4 | 39.00° | 612364254608490 | |
| P5 | 39.00° | 23257173 | |
| P6 | 38.51° | 20286876 |
Crown
| # | Angle | Facets | Notes |
|---|---|---|---|
| C1 | 45.00° | 9648 | |
| C2 | 45.00° | 12366084 | |
| C3 | 45.00° | 2472 | |
| C4 | 35.00° | 9648 | |
| C5 | 35.00° | 12366084 | |
| C6 | 35.00° | 2472 | |
| C7 | 25.00° | 9648 | |
| C8 | 25.00° | 12366084 | |
| C9 | 25.00° | 2472 | |
| T | 0.00° | 96 |