Faceting Design Diagram: Flex Cushion – Sapphire / Corundum – Ruby, Ceylon, Padparadschah, Pink, Yellow, Green


Sapphire / Corundum (Ruby, Ceylon, Padparadschah, Pink, Yellow, Green)

Flex Cushion (B28.JRG)
By Jeff R. Graham
Copyright 2001
89.4% Light Return
Angles for R.I. = 1.76
73 facets + 20 facets on girdle = 93
2-fold, mirror-image symmetry
96 index
L/W = 1.250 T/W = 0.782 T/L = 0.626
P/W = 0.597 C/W = 0.164
H/W = (P+C)/W+0.02 = 0.781
P/H = 0.765 C/H = 0.210
Vol./W^3 = 0.393

Addition # 5 – NOTE:P1 and all of the girdle facets will meet EXCEPT at the corners. This is not all that easy to cut, be sure your L/W is correct. This is 75.7% in Quartz, and works well in Zircon (88.1%).

 


Random – Cosine – ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

About the author
Jeff R. Graham
The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.
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