Op Blade: Faceting Design Diagram
Successful tips, details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Op Blade".
Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
Op Blade (QTZ66.JRG)
By Jeff R. Graham
Copyright 1998
82.1% Light Return
Angles for R.I. = 1.54
77 facets + 8 facets on girdle = 85
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.482 T/L = 0.482
P/W = 0.437 C/W = 0.150
H/W = (P+C)/W+0.02 = 0.607
P/H = 0.721 C/H = 0.247
Vol./W^3 = 0.202
Addition # 3 - This design cuts a little different than usual. It is not hard, watch the step on the crown. I like this in a large Amethyst (in darker color). Cut in about any material, 1-12cts. Cut in refractive indexes 1.54 to 2.14 (88.2%) with no changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
