Seagull Variation: 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 "Seagull Variation".
Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)
Seagull Variation (GNETP21.JRG)
By Jeff R. Graham
80.5% Light Return
Angles for R.I. = 1.73
52 facets + 6 facets on girdle = 58
3-fold, mirror-image symmetry
L/W = 1.155 T/W = 0.576 T/L = 0.499
P/W = 0.416 C/W = 0.200
H/W = (P+C)/W+0.02 = 0.636
P/H = 0.655 C/H = 0.314
Vol./W^3 = 0.263
Addition # 2 - This design takes a little thinking to cut because of the 3-sym facets that are used (the crown in particular). However, it does not have a lot of facets and can be cut fairly fast, 1-6cts light to medium material. This works in man-made Sapphire, YAG, and Spinel.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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