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

Lavender Storm (MIR24.JRG)
By Jeff R. Graham
Copyright 2004
89.5% Light Return
Angles for R.I. = 1.62
41 facets + 12 facets on girdle = 53
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.292 T/L = 0.292
P/W = 0.445 C/W = 0.228
H/W = (P+C)/W+0.02 = 0.693
P/H = 0.642 C/H = 0.329
Vol./W^3 = 0.248

Addition # 9 - This is nice in any material and has a lot of sparkle. Cut this in about any size and you will be amazed at how much life the design has. I tend to like light to medium saturated colors for this design. It does work well in Garnet. Cut in refractive indexes 1.54 to 2.14 with no changes.

 

 

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