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

Morph Square - Reflector (MC5.JRG)
By Jeff R. Graham
Copyright 1999
89.6% Light Return
Angles for R.I. = 1.62
20 facets + 8 facets on girdle = 28
2-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.158
H/W = (P+C)/W+0.02 = 0.613 P/H = 0.709
C/H = 0.258 Vol./W^3 = 0.260

NOTE: very easy to cut, the corners just float in and can be larger or smaller depending on your rough. Cut the crown until the six steps look even. Be careful when cutting 24-72, take care in polishing, 1/2cts+. Works in Topaz also...

 

 

 

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