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

Walking Star (SAP5.JRG)
By Jeff R. Graham
Copyright 1994
81% Light Return
Angles for R.I. = 1.76
73 facets + 6 facets on girdle = 79
6-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.577 T/L = 0.500
P/W = 0.414 C/W = 0.211
H/W = (P+C)/W+0.02 = 0.645
P/H = 0.641 C/H = 0.328
Vol./W^3 = 0.261

Gram Book 1 - This design cuts a nice stone, in any color material that you might have. If you have trouble finding rough you can buy a badly cut stone cheap sometimes and use it as a preform. This works well in man-made Sapphire and Spinel.

 

 

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