| Home | Rough | Bargains | Equipment | Books | Online Designs | Just Ask Jeff | Order | News List | Contact Me | Links |
| Amethyst | Aquamarine | Beryl | Citrine | Emerald | Garnet | Opal | Peridot | Sapphire | Scapolite | Spinel | Sunstone | Topaz | Tourmaline | Quartz | Zircon |
| Beginner's Page | New Stuff | Odds & Ends | Specials | Parcels | Synthetics |
| Cut Gemstones | Gemological Information | Gemstone Pricing Guides | How to buy Gemstones |
Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
Snare (MIR22.JRG)
By Jeff R. Graham
Copyright 2004
94.5% Light Return
Angles for R.I. = 1.54
36 facets + 4 facets on girdle = 40
4-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.179
H/W = (P+C)/W+0.02 = 0.634
P/H = 0.686 C/H = 0.283
Vol./W^3 = 0.250Addition # 9 - This is simple to cut and works well in about any material. Cut in refractive indexes 1.54 to 2.14 with no changes. This works well in saturated materials like dark Citrine and Amethyst.

Random - Cosine - ISO
| Home | Rough | Bargains | Equipment | Books | Online Designs | Just Ask Jeff | Order | News List | Contact Me | Links |