Tri-Curve Spike by Fred W. Van Sant
- L/W
- 100%
- Design RI
- 1.76
- H/W
- 56%
- Gear
- 72
- V/W³
- 0.173
- Symmetry
- 1 (mirrored)
- Facets
- 79
- Tiers
- 15
- Crown
- 18
- Pavilion
- 61
Van Sant, Fred W; Star Cuts I (1980) p27;
Wireframe
Pavilion
| # | Angle | Facets | Notes |
|---|---|---|---|
| G1 | 90.00° | 12325474971 | |
| G2 | 90.00° | 32127455169 | |
| G3 | 90.00° | 51929435367 | |
| P1 | 42.92° | 12325474971 | |
| P2 | 42.00° | 22226465070 | |
| P3 | 41.84° | 32127455169 | |
| P4 | 40.00° | 51929435367 |
Crown
| # | Angle | Facets | Notes |
|---|---|---|---|
| C1 | 40.25° | 12325474971 | |
| C2 | 40.25° | 32127455169 | |
| C3 | 39.58° | 51929435367 | |
| C4 | 37.00° | 22226465070 | |
| C5 | 32.89° | 71731415565 | |
| C6 | 30.00° | 42028445268 | |
| C7 | 28.50° | 722448 | |
| T | 0.00° | 72 |