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


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

Warp (CHECK48.JRG)
By Jeff R. Graham
Copyright 2002
90.3% Light Return
Angles for R.I. = 1.54
105 facets + 4 facets on girdle = 109
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.515
T/L = 0.515 P/W = 0.609 C/W = 0.204
H/W = (P+C)/W+0.02 = 0.833
P/H = 0.731 C/H = 0.245
Vol./W^3 = 0.417

Addition # 8 – This is interesting to cut and designed for a large stone. It has an unusual reflection and is not too tough to cut, although the crown is a bit involved. Cut in Refractive Indexes 1.54 to 2.14 with no changes.


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.