Faceting Design Diagram: Frill Hex – Topaz – Swiss, Electric, London Blue, Imperial, White, Yellow, Pink, Purple, Champange


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

Frill Hex (TOPAZ15.JRG)
By Jeff R. Graham
Copyright 1998
84% Light Return
Angles for R.I. = 1.62
73 facets + 6 facets on girdle = 79
6-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.496 T/L = 0.430
P/W = 0.485 C/W = 0.321
H/W = (P+C)/W+0.02 = 0.826
P/H = 0.587 C/H = 0.389
Vol./W^3 = 0.343

Addition # 3 – This is not hard really, but you will probably have the cut the steps a couple of times to get the spacing right. This design is deep and works great for lighter pieces of rough, 2-18cts. Cut in refractive indexes 1.62 to 1.93 (85.7%) 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.