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

Simple Glitter Drop (MC100.JRG)
By Jeff R. Graham
Copyright 2006
75.2% Light Return
Angles for R.I. = 1.62
104 facets + 17 facets on girdle = 121
1-fold, mirror-image symmetry
96 index
L/W = 1.108 T/W = 0.474 T/L = 0.428 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 = 0.240

Addition # 12 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is an easier design then "Glitter Drop", there is one less pavilion tier and is will work for smaller stones. Use light to mediumly saturated materials. Note: Cut to L/W, P9 can be cut in to help with P7.

 

 

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