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

Brass Button (CHECK17.JRG)
By Jeff R. Graham
Copyright 2001
80.9% Light Return
Angles for R.I. = 1.54
53 facets + 8 facets on girdle = 61
8-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.206 T/L = 0.206
P/W = 0.445 C/W = 0.231
H/W = (P+C)/W+0.02 = 0.696
P/H = 0.640 C/H = 0.331
Vol./W^3 = 0.254

Addition # 6 – Cut in refractive indexes 1.54 to 1.93 (85.5%) with no changes. This is fun and fast to cut. It works well in any material, although I prefer it in light colors.


Random – Cosine – ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler