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


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

 Jeff Graham Facet Design

Jeff Graham Facet Design

Jumble (MIR61.JRG)
By Jeff R. Graham
Copyright 2005
92% Light Return
Angles for R.I. = 1.62
37 facets + 8 facets on girdle = 45
4-fold symmetry 96 index
L/W = 1.000 T/W = 0.374 T/L = 0.374 P/W = 0.405
C/W = 0.179 H/W = (P+C)/W+0.02 = 0.604 P/H = 0.670 C/H = 0.297 Vol./W^3 = 0.200

Addition # 10 – This is interesting to cut and to look at because of the unusual flash. This works well in refractive indexes 1.62 to 2.14 with no changes. Cut in light to medium colored rough.


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.