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


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

Shimmer (MIR13.JRG)
By Jeff R. Graham
Copyright 2004
94.5% Light Return
Angles for R.I. = 1.54
57 facets + 8 facets on girdle = 65
8-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.259 T/L = 0.259
P/W = 0.435 C/W = 0.177
H/W = (P+C)/W+0.02 = 0.632
P/H = 0.688 C/H = 0.280
Vol./W^3 = 0.213

Addition # 9 – Cut in refractive indexes 1.54 to 2.14 with no changes. This is easy to cut and I designed it for medium saturated stones. This works well in Garnets like Rhodolite and it’s killer in light colored Amethyst for earrings.


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.