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


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

Jeff Graham Facet Des Jeff Graham Facet Design

Parity (MIR67.JRG)
By Jeff R. Graham
Copyright 2005
92.3% Light Return
Angles for R.I. = 1.54
49 facets + 8 facets on girdle = 57
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.276 T/L = 0.276 P/W = 0.420
C/W = 0.208 H/W = (P+C)/W+0.02 = 0.648 P/H = 0.648 C/H = 0.322 Vol./W^3 = 0.210

Addition # 10 – Cut in refractive indexes 1.54 to 2.14 with no changes. This is not hard to cut and makes a very nice stone. I like it in medium saturated materials. It makes a nice stone in Tourmaline and is good for thin nodules.

Jeff Graham Facet Design

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.