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

Jeff R. Graham

The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.

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