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

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

Squeezed Square (QTZ8.JRG)
By Jeff R. Graham
Copyright 1994
94.6% Light Return
Angles for R.I. = 1.54
20 facets + 4 facets on girdle = 24
4-fold symmetry
96 index
L/W = 1.000 P/W = 0.458 C/W = 0.144
H/W = (P+C)/W+0.02 = 0.622
P/H = 0.736 C/H = 0.232
Vol./W^3 = 0.241

Addition # 3 – Fast cutting with a nice bright flash, this design makes a good stone when you want to cut something that’s not involved. I use it for earrings mostly, cut it in any material in 4-8mm is best. On larger stones a table is a good idea, cut to meet C2,C3… Cut in refractive indexes 1.54 to 2.14 (92.3%) 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.