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


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

What Pavilion? (TOPAZ9.JRG)
By Jeff R. Graham
Copyright 1997
84% Light Return
Angles for R.I. = 1.62
87 facets + 16 facets on girdle = 103
8-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.534 T/L = 0.534
P/W = 0.423 C/W = 0.168
H/W = (P+C)/W+0.02 = 0.611
P/H = 0.693 C/H = 0.275
Vol./W^3 = 0.206

Addition # 2 – Note on this design in the Pavilion you will cut off 2 facets, because of the sym change. On the P4 some reach girdle, some are short, like steps but are center point. Cut P5 until center point & looks right, 1- 12cts. Cut in refractive indexes 1.62 to 1.93 (92.5%) 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.