Glitter 88: Faceting Design Diagram
Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Glitter 88".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Glitter 88 (MC90.JRG)
By Jeff R. Graham
81.3% Light Return
Angles for R.I. = 1.62
121 facets + 8 facets on girdle = 129
8-fold, mirror-image symmetry
L/W = 1.000 T/W = 0.482 T/L = 0.482 P/W = 0.466
C/W = 0.209 H/W = (P+C)/W+0.02 = 0.695 P/H = 0.671 C/H = 0.300 Vol./W^3 = 0.258
Addition # 12 - Cut in refractive indexes 1.62 to 2.14 (90.5%) with no changes. This works well in light to medium saturated materials. Rough in the table and then cut the stars, it make the meets easier.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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