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


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

Kilter (MIR15.JRG)
By Jeff R. Graham
Copyright 2004
94.4% Light Return
Angles for R.I. = 1.54
28 facets + 12 facets on girdle = 40
4-fold symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.203
H/W = (P+C)/W+0.02 = 0.657
P/H = 0.661 C/H = 0.309
Vol./W^3 = 0.267

Addition # 9 – Cut in refractive indexes 1.54 to 2.14 with no changes. This is interesting and works well in about any material. It works well in Garnet and Sapphire. Note: The corners are just cut in and can vary, make them as close to the diagram as you can. A table can be cut to meet C5 on a large stone.


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.