| Ayn Rand - designed by Carl R. Downey alckytxn@flash.net ©1998 | |
|---|---|
| Created to fit a piece of medium Bolivian amethyst | |
| Angles for R.I. = 1.54 | 48 facets + 10 facets on girdle = 58 |
| 1-fold symmetry | 96 index |
| L/W = 1.155 T/W = 0.647 T/L = 0.561 P/W = 0.410 C/W = 0.158 | H/W = (P+C)/W+0.02 = 0.588 P/H = 0.697 C/H = 0.269 |
| Vol./W^3 = 0.187 | Brightness at 0 degrees tilt for R.I. = 1.54
COS = 50.5 ISO = 68.2 |
| Pavilion | |||
|---|---|---|---|
| 1 | 90.00 | 96-04-08-12-16-84-88-92 | if you cut 80 & 20 too you will have.. |
| 2 | 90.00 | 64 | ..an 'edge' to cut down to for... |
| 3 | 90.00 | 32 | ...the sides |
| 4 | 50.00 | 32 | establish girdle |
| 5 | 50.00 | 64 | level girdle at point |
| 6 | 43.50 | 96-04-08-12-16-84-88-92 | finish leveling girdle |
| 7 | 42.50 | 02-06-10-14-86-90-94 | meet at girdle facets as shown |
| Crown | |||
| a | 55.00 | 96-04-08-12-80-84-88-92 | this is all fairly straight forward |
| b | 55.00 | 32 | |
| c | 55.00 | 64 | |
| d | 40.00 | 96-04-08-12-80-84-88-92 | |
| e | 40.00 | 64 | |
| f | 40.00 | 32 | |
| g | 20.00 | 96-04-08-12-80-84-88-92 | |
| h | 20.00 | 64 | |
| i | 20.00 | 32 | |
| T | 0.00 | Table | meet g-g-i |
| This cut may lend itself to carving or 'dimples' on the large pavilion facets. | |||
