Faceting Design Diagram: Blindly Simple – Quartz – Citrine, Amethyst, Ametrine, Smokey, Rose


Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

Blindly Simple (MIR19.JRG) Amethyst cut by Tony Carson
By Jeff R. Graham
Copyright 2004
91.3% Light Return
Angles for R.I. = 1.54
20 facets + 4 facets on girdle = 24
4-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.192
H/W = (P+C)/W+0.02 = 0.646
P/H = 0.672 C/H = 0.297
Vol./W^3 = 0.237

Addition # 9 – This is so simple and fast it’s hard to believe how nice the cut really is. Try it in about any material, I especially like it in Amethyst. It’s good for red Garnets and makes great accent stones.

 

 

 


Random – Cosine – ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Gram Faceting Archive of Information
This edited version of an article by the late Jeff Graham is part of a special archived informational series from Gram Faceting. Used with permission.