Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Crystal Lilly (MIR53.JRG)
By Jeff R. Graham
Copyright 2005
87.9% Light Return
Angles for R.I. = 1.54
49 facets + 8 facets on girdle = 57
8-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.266 T/L = 0.266 P/W = 0.450 C/W = 0.232 H/W = (P+C)/W+0.02 = 0.702 P/H = 0.641 C/H = 0.330 Vol./W^3 = 0.263
PAVILION
CROWN
Addition # 10 – This design looks quite different than the “Floating Lilly” design. It is surprising what a few changes can do. Cut this in about any material and color, it’s easy and pretty fast to do. Cut in refractive indexes 1.54 to 2.14 with no changes.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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