Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

Shimmer (MIR13.JRG)
By Jeff R. Graham
Copyright 2004
94.5% Light Return
Angles for R.I. = 1.54
57 facets + 8 facets on girdle = 65
8-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.259 T/L = 0.259
P/W = 0.435 C/W = 0.177
H/W = (P+C)/W+0.02 = 0.632
P/H = 0.688 C/H = 0.280
Vol./W^3 = 0.213

Addition # 9 - Cut in refractive indexes 1.54 to 2.14 with no changes. This is easy to cut and I designed it for medium saturated stones. This works well in Garnets like Rhodolite and it's killer in light colored Amethyst for earrings.

 

 

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