Athena: Faceting Design Diagram
Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Athena".0
By Jeff R. Graham
86.1% Light Return
Angles for R.I. = 1.54
27 facets + 6 facets on girdle = 33
2-fold, mirror-image symmetry
L/W = 1.500 T/W = 1.232 T/L = 0.821 P/W = 0.450
C/W = 0.171 H/W = (P+C)/W+0.02 = 0.642 P/H = 0.702 C/H = 0.267 Vol./W^3 = 0.471
Addition # 11 - Cut this in refractive indexes 1.54 to 2.14 with no changes. This is very nice and designed for color, it is great in Aquamarine and Tourmaline. This is not hard to cut but can be a little tricky. Note: The C4 cuts to make C3 a pointed diamond. Expect to have to tweak the crown.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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