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


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

Step Up (QTZ59.JRG)
By Jeff R. Graham
Copyright 1997
80% Light Return
Angles for R.I. = 1.54
49 facets + 8 facets on girdle = 57
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.493 T/L = 0.493
P/W = 0.452 C/W = 0.153
H/W = (P+C)/W+0.02 = 0.625
P/H = 0.723 C/H = 0.245
Vol./W^3 = 0.249

Addition # 2 – This takes a little cutting, you might have to cut the top a couple of times to get it. When you have done it once it gets easier. About any material (I like a good Amethyst) 1-12cts. Cut in refractive indexes 1.54 to 2.14 (88%) with no changes.


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.