Faceting Design Diagram: “S” Hex +2 – Topaz – Swiss, Electric, London Blue, Imperial, White, Yellow, Pink, Purple, Champange


Topaz (Swiss, Electric, London Blue, Imperial, White, Yellow, Pink, Champange)

“S” Hex +2 (TOPAZ13.JRG)
By Jeff R. Graham
Copyright 1998
86% Light Return
Angles for R.I. = 1.62
47 facets + 8 facets on girdle = 55
2-fold, mirror-image symmetry
96 index
L/W = 1.200 T/W = 0.738 T/L = 0.615
P/W = 0.463 C/W = 0.185
H/W = (P+C)/W+0.02 = 0.668
P/H = 0.693 C/H = 0.277
Vol./W^3 = 0.319

Addition # 2 – Cutting in the table before the C7 facets is easier. A preform is a good idea also. This is medium hard to cut, after you have cut it once it gets easy. Any good material, 1-14cts. Cut in refractive indexes 1.62 to 1.93 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.