Diamond Eye 2.0: Faceting Design Diagram
Successful tips and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Diamond Eye 2.0".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Diamond Eye 2.0 (CHECK83.JRG)
By Jeff R. Graham
Copyright 2003
75.3% Light Return
Angles for R.I. = 1.62
39 facets + 12 facets on girdle = 51
2-fold, mirror-image symmetry
96 index
L/W = 2.033 T/W = 0.458 T/L = 0.225
P/W = 0.415 C/W = 0.197
H/W = (P+C)/W+0.02 = 0.632
P/H = 0.657 C/H = 0.311
Vol./W^3 = 0.336
Addition # 8 - The light return on this is pretty good for a marquise. This works well in about any material, particularly medium saturated colored stones.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
