Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)

Rhodolite Rose (GNETR1.JRG)
By Jeff R. Graham
Copyright 1993
85.8% Light Return
Angles for R.I. = 1.73
153 facets + 8 facets on girdle = 161
8-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.508 T/L = 0.508
P/W = 0.425 C/W = 0.210
H/W = (P+C)/W+0.02 = 0.655
P/H = 0.649 C/H = 0.320
Vol./W^3 = 0.248

Gram Book 1 - It is all cut to center point and cuts easy. A larger size stone is better but it can be cut small. This works well in man-made Sapphire and CZ if you want to cut it large, but cannot find, or can afford, a large piece of natural rough. Cut in refractive index 1.73 to 2.14 (88.7%) with no changes.

 

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