Ice: Faceting Design Diagram

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

Ice (CHECK49.JRG)
By Jeff R. Graham
Copyright 2002
80.7% Light Return
Angles for R.I. = 1.54
58 facets + 12 facets on girdle = 70
3-fold, mirror-image symmetry
96 index
L/W = 1.077 T/W = 0.157 T/L = 0.146
P/W = 0.434 C/W = 0.223
H/W = (P+C)/W+0.02 = 0.677
P/H = 0.641 C/H = 0.330
Vol./W^3 = 0.238

Addition # 8 - This cuts pretty fast and is not hard. It works best in a large stone and I actually designed it for Rose de France. Cut in refractive indexes 1.54 to 2.14 (87.9%)with no changes. P5 & P6 cut fast and can be omitted on a small stone (the table too).

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler