| Rose Tear 120a-96 - designed by Bob Keller ©1999 | |
|---|---|
| 120 facets | 96 index |
| L/W = 1.000 H/W = 1.577 | Vol./W^3 = 0.661 |
| Hemisphere A | |||
|---|---|---|---|
| p | 90.00 | 04-12-20-28-36-44-52-60-68-76-84-92 | Cut to equal depth, set size |
| 1 | 75.49 | 04-12-20-28-36-44-52-60-68-76-84-92 | Cut level girdle (equator) line |
| 2 | 72.18 | 05-11-21-27-37-43-53-59-69-75-85-91 | Meet p,1 |
| 3 | 47.99 | 05-11-21-27-37-43-53-59-69-75-85-91 | Meet 1,2 |
| 4 | 45.99 | 04-12-20-28-36-44-52-60-68-76-84-92 | Meet 1,2,3 |
| 5 | 15.50 | 04-12-20-28-36-44-52-60-68-76-84-92 | Meet 3,4,apex (pole) |
| Hemisphere B | |||
| a | 81.92 | 04-12-20-28-36-44-52-60-68-76-84-92 | Meet 1,2 on hemisphere A |
| b | 80.00 | 05-11-21-27-37-43-53-59-69-75-85-91 | Meet 1,2 on hemisphere A, a |
| c | 63.71 | 05-11-21-27-37-43-53-59-69-75-85-91 | Meet b,c |
| d | 62.08 | 04-12-20-28-36-44-52-60-68-76-84-92 | Meet a,b,c |
| e | 50.00 | 04-12-20-28-36-44-52-60-68-76-84-92 | Meet c,d,apex (pole) |
This meetpoint design for a rose cut tear incorporates identical plan views for both hemispheres. Begin by cutting a 12-sided cylindrical preform. The height of the preformed cylinder must be at least 1.58 times greater than its maximum width for you to have enough material when you get to the course 5 and e (pole) facets. When you cut the course 1 facets for the A hemisphere, create a level 'girdle' (equator) line dividing the height of cylinder proportionately, allowing 2.15 times more for the z dimension of the B hemisphere as the A hemisphere.
Transfer when you've finished the first hemisphere, and repeat the course a-e sequence on the second hemisphere.
If you cut a Rose Tear 120a-96 of your own, be sure and let me know what you've cut and how you made out.
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| A 34.4 carat Rose Tear cut by Jim Foster (a.k.a. Swarfmaster). It was cut from garden glass having particular appeal to visitors at Lotusland, a botanic garden in Santa Barbara, CA., because of glass displayed in the garden. Jim reports it cuts a remarkably bright stone and he also sells earrings and pendants faceted from garden glass at Lotusland. Nice work Jim! |
