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

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

Simple Surprise (MIR35.JRG)Pink Tourmaline
By Jeff R. Graham
Copyright 2004
91.7% Light Return
Angles for R.I. = 1.54
37 facets + 6 facets on girdle = 43
6-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.289 T/L = 0.250
P/W = 0.450 C/W = 0.156
H/W = (P+C)/W+0.02 = 0.627
P/H = 0.718 C/H = 0.250
Vol./W^3 = 0.216

Addition # 9 – This is actually best cut in a large stone and I like it very much in earrings (8-12mm). This is fun, fast and easy. About any material, including Garnets works well. Cut in refractive indexes 1.54 to 2.14 with no changes. Hint: By varying the C2 the flash can be changed for interesting effects, depending on the size of the 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.