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

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

Simple Check (CHECK13.JRG)
By Jeff R. Graham
Copyright 2001
86.9% Light Return
Angles for R.I. = 1.54
22 facets + 4 facets on girdle = 26
2-fold, mirror-image symmetry
96 index
L/W = 1.336 P/W = 0.457 C/W = 0.244
H/W = (P+C)/W+0.02 = 0.722
P/H = 0.634 C/H = 0.339
Vol./W^3 = 0.547

Addition # 6 – This is fun and fast… This works in almost any material with no changes. L/W is not critical on this design and it can vary a little with no problems. I really designed this for Tourmaline crystals, it will yield very well, with steep ends to help with dark “c” axis stones. This design does darken a bit…

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.