Hint: Faceting Design Diagram
Successful tips, details, and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Hint".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Hint (MC112.JRG)
By Jeff R. Graham
Copyright 2006
75.8% Light Return
Angles for R.I. = 1.62
82 facets + 6 facets on girdle = 88
3-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.364 T/L = 0.364 P/W = 0.530
C/W = 0.198 H/W = (P+C)/W+0.02 = 0.748 P/H = 0.709 C/H = 0.265 Vol./W^3 = 0.236
PAVILION
CROWN
Addition # 12 - Cut this in refractive indexes 1.62 to 1.93 (79.7%) with no changes. This is designed for light materials and is brighter than the ray trace indicates. The crown can be cut in a different order.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
