Shadow Box Triangle: Faceting Design Diagram
Helpful tips and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Shadow Box Triangle".0
Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)
Shadow Box Triangle (GNETA4.JRG)
By Jeff R. Graham
80% Light Return
Angles for R.I. = 1.78
46 facets + 9 facets on girdle = 55
3-fold, mirror-image symmetry
L/W = 1.012 T/W = 0.312 T/L = 0.308
P/W = 0.416 C/W = 0.187
H/W = (P+C)/W+0.02 = 0.622
P/H = 0.668 C/H = 0.300
Vol./W^3 = 0.210
Gram Book 1 - This design is a little harder to cut (like most triangles), but it has much better return than any other that I've ever seen (notice the 1.78 R.I.). Most only have return in the center none in edges. Light to med material this works well in YAG, Sapphire and Spinel, 1-12cts.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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