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


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

Beginner Check (MC1.JRG)
By Jeff R. Graham
Copyright 1999
90.2% Light Return
Angles for R.I. = 1.54
27 facets + 12 facets on girdle = 39
2-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.267 T/L = 0.267
P/W = 0.435 C/W = 0.191
H/W = (P+C)/W+0.02 = 0.646
P/H = 0.673 C/H = 0.296
Vol./W^3 = 0.216

Addition # 4 – This is easy and fast to cut, it is a good design to cut if you have never done a checker top before. It is nice in almost any material, R.I. from 1.54 to 1.76 without changes. I prefer it in a smaller size, ½- 8cts…


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.