by Jeff Graham
Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
9 Floating Rose (DOME19.JRG)
By Jeff R. Graham
Copyright 2007
85.3% Light Return
Angles for R.I. = 1.54
64 facets + 9 facets on girdle = 73
9-fold, mirror-image symmetry
72 index
L/W = 1.015 T/W = 0.248 T/L = 0.245 P/W = 0.421 C/W = 0.297
H/W = (P+C)/W+0.02 = 0.738 P/H = 0.571 C/H = 0.402
Vol./W^3 = 0.261
PAVILION
| P1 | 41.00 | 72-08-16-24 | Cut to center point. |
| 32-40-48-56-64 | |||
| P2 (G) | 90.00 | 72-08-16-24 | Cut to meet P1. |
| 32-40-48-56-64 |
CROWN
| C1 | 68.00 | 72-08-16-24 | Cut to meet girdle. |
| 32-40-48-56-64 | |||
| C2 | 48.23 | 04-12-20-28 | Cut to meet girdle. |
| 36-44-52-60-68 | |||
| C3 | 37.85 | 72-08-16-24 | Cut to meet C1. |
| 32-40-48-56-64 | |||
| C4 | 22.00 | 04-12-20-28 | Cut to meet C2. |
| 36-44-52-60-68 | |||
| C5 | 16.02 | 72-08-16-24 | Cut to meet C3. |
| 32-40-48-56-64 | |||
| C6 | 11.00 | 04-12-20-28 | Cut to meet C4. |
| 36-44-52-60-68 | |||
| T | 0.00 | Table | Cut to meet C5, C6. |
Addition # 13 - Cut in refractive indexes 1.54 to 2.14 with no changes. This is nine sided and may take a special setting. It is designed for light to medium saturatedmaterial and has a very interesting flash pattern.
This article is by the late Jeff Graham. It is part of a special series of Archived Information from Gram Faceting.
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