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


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

Glider (MC83.JRG)
By Jeff R. Graham
Copyright 2002
81.3% Light Return
Angles for R.I. = 1.54
12 facets + 3 facets on girdle = 15
1-fold, mirror-image symmetry
96 index
L/W = 1.866 T/W = 0.913 T/L = 0.489
P/W = 0.431 C/W = 0.127
H/W = (P+C)/W+0.02 = 0.578
P/H = 0.746 C/H = 0.219
Vol./W^3 = 0.257

Addition # 7 – This cuts fast and easy. It is a good idea to nick the corners a little bit so they are not too sharp. Cut in refractive indexes 1.54 to 1.73 (81%) with no changes. The L/W can vary with no problems…


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.