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
Copyright 1994
80.5% Light Return
Angles for R.I. = 1.73
52 facets + 6 facets on girdle = 58
3-fold, mirror-image symmetry
96 index
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

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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