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

About the author
Jeff R. Graham
The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.
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