Faceting Design Diagram: CZ “X” – Cubic Zirconia


Cubic Zirconia

CZ “X” (CZ13.JRG)
By Jeff R. Graham
Copyright 1997
77% Light Return
Angles for R.I. = 2.20
59 facets + 8 facets on girdle = 67
2-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.551 T/L = 0.551
P/W = 0.399 C/W = 0.201
H/W = (P+C)/W+0.02 = 0.620
P/H = 0.644 C/H = 0.324
Vol./W^3 = 0.283

Addition # 2 – The light return is better than it shows, there are a lot of trapped rays. It is a little tricky to cut at the P8,P10. Cut in any CZ, 2- 12cts.

 

 


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.