Ferris, Elmer; Lapidary Journal, May 1972, p372;
| # | Angle | Facets | Notes |
|---|---|---|---|
| G1 | 90.00° | 2141830344650626678 | |
| P1 | 40.00° | 2141830344650626678 | |
| P2 | 36.00° | 4122028364452606876 |
| # | Angle | Facets | Notes |
|---|---|---|---|
| C1 | 36.00° | 2141830344650626678 | |
| C2 | 30.00° | 4122028364452606876 | |
| C3 | 18.00° | 2141830344650626678 | |
| T | 0.00° | 80 |