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


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

Six Gig (MIR11.JRG)
By Jeff R. Graham
Copyright 2004
83.7% Light Return
Angles for R.I. = 1.54
30 facets + 6 facets on girdle = 36
6-fold symmetry
96 index
L/W = 1.155 P/W = 0.450 C/W = 0.242
H/W = (P+C)/W+0.02 = 0.713
P/H = 0.632 C/H = 0.340
Vol./W^3 = 0.238

Addition # 9 – This one is just fast and fun to cut. I have several other cuts similar to this, but the reflections on this one are quite nice. Any material, about any size. A table is a good idea on large stones. Cut in refractive indexes 1.54 to 1.93 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.