Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)

Glitter Pear (MC98.JRG)
By Jeff R. Graham
Copyright 2006
80.4% Light Return
Angles for R.I. = 1.62
116 facets + 15 facets on girdle = 131
1-fold, mirror-image symmetry
96 index
L/W = 1.154 T/W = 0.488 T/L = 0.423 P/W = 0.447
C/W = 0.207 H/W = (P+C)/W+0.02 = 0.674 P/H = 0.663 C/H = 0.307 Vol./W^3 = 0.248

Addition # 12 - Cut this in refractive indexes 1.62 to 2.14 with no changes. This cuts like my "Brilliant Pear" designs only, of course, with more facets. This is designed for a large stone, at least 12mm. Use lightly saturated materials.

 

 

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