Faceting Design Diagram: Purple Crazy – Quartz – Citrine, Amethyst, Ametrine, Smokey, Rose

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

Purple Crazy (QTZ.JRG)
By Jeff R. Graham
Copyright 1994
80.5% Light Return
Angles for R.I. = 1.54
24 facets + 4 facets on girdle = 28
4-fold symmetry
96 index
L/W = 1.000 P/W = 0.494 C/W = 0.155
H/W = (P+C)/W+0.02 = 0.668
P/H = 0.739 C/H = 0.232
Vol./W^3 = 0.266

Addition # 2 – Here is a design that cuts fast and makes a great pair of earrings, which is what I designed it for. Cut it in the 4-8mm range in about any material. A preform will help save waste, Quartz is cheap (in lighter colors). I usually don’t. On a larger stone a table is a good idea, cut to meet C2, C3. Cut in refractive indexes 1.54 to 1.93 with no changes.

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.