Singular 7: Faceting Design Diagram

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

Singular 7 (MIR33.JRG)
By Jeff R. Graham
Copyright 2004
94.4% Light Return
Angles for R.I. = 1.54
57 facets + 7 facets on girdle = 64
7-fold symmetry
77 index
L/W = 1.026 T/W = 0.299 T/L = 0.291
P/W = 0.431 C/W = 0.188
H/W = (P+C)/W+0.02 = 0.639
P/H = 0.675 C/H = 0.294
Vol./W^3 = 0.195

Addition # 9 - This is quite interesting and not difficult to cut. It works well in any material. I like it in Garnets. Cut in refractive indexes 1.54 to 2.14 with no changes. This is a bright design and has a ton of sparkle.

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler