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

Flipper (SAP18.JRG)
By Jeff R. Graham
Copyright 1998
76% Light Return
Angles for R.I. = 1.76
65 facets + 8 facets on girdle = 73
2-fold, mirror-image symmetry
96 index
L/W = 1.330 T/W = 0.845 T/L = 0.635
P/W = 0.382 C/W = 0.182
H/W = (P+C)/W+0.02 = 0.584
P/H = 0.654 C/H = 0.312
Vol./W^3 = 0.259

Addition # 2 - This is medium-hard to cut. It works well in sapphire and is a nice change from an oval, which I always seem to have rough to cut in (that shape). A preform is a help and roughing in the table helps too. This works well in man-made Sapphire and Spinels...

 

 

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