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.

 

 

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