Faceting Design Diagram: Brass Button – Quartz – Citrine, Amethyst, Ametrine, Smokey, Rose


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

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.