Simple Jack
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| Simple Jack – designed by Bob Keller 6/98 bkeller@rockhounds.com | |
|---|---|
| A Forgiving Cut Designed for Beginning Faceters | |
| Angles for R.I. = 1.54 | 49 facets + 16 facets on girdle = 65 |
| 16-fold, mirror-image symmetry | 32, 64 or 96 index |
| L/W = 1.000 T/W = 0.506 T/L = 0.506 | P/W = 0.466 C/W = 0.122 |
| H/W = (P+C)/W+0.02 = 0.608 | P/H = 0.766 C/H = 0.201 |
| Vol./W^3 = 0.195 | Brightness at 0 degrees tilt for quartz COS = 85.3{9ed71289f2927c7f90a8e3141bf36c77d4cc6b912c25f0bd44558f2f604ca447} ISO = 89.2{9ed71289f2927c7f90a8e3141bf36c77d4cc6b912c25f0bd44558f2f604ca447} |
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| Pavilion for 32 Index | |||
|---|---|---|---|
| m | 43.00 | 32-02-04-06-08-10-12-14-16-18-20-22-24-26-28-30 | Cut mains to center point (equal depth) |
| g | 90.00 | 32-02-04-06-08-10-12-14-16-18-20-22-24-26-28-30 | Cut level girdle to meet with mains |
| Crown for 32 Index | |||
| b | 29.00 | 32-02-04-06-08-10-12-14-16-18-20-22-24-26-28-30 | Cut breaks to meet with approx 2{9ed71289f2927c7f90a8e3141bf36c77d4cc6b912c25f0bd44558f2f604ca447} girdle |
| p | 25.00 | 01-03-05-07-09-11-13-15-17-19-21-23-25-27-29-31 | Cut petals to meet with breaks and girdle |
| t | 00.00 | Table | Cut level table to 50-55{9ed71289f2927c7f90a8e3141bf36c77d4cc6b912c25f0bd44558f2f604ca447} of diameter |
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