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


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

Quartz Shield (MC38.JRG) 3.0 carat Teal Tourmaline
By Jeff R. Graham
Copyright 1999
82.8% Light Return
Angles for R.I. = 1.54
44 facets + 10 facets on girdle = 54
1-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.507 T/L = 0.507
P/W = 0.426 C/W = 0.191
H/W = (P+C)/W+0.02 = 0.637
P/H = 0.668 C/H = 0.300
Vol./W^3 = 0.232

Addition # 4 – This is fairly easy to cut and has a nice flash. It is designed to be used with other stones in a set, but still be easy to set in jewelry. Cut in about any color material, 1cts+. Works in Tourmaline, Topaz and Peridot.


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.