Ten Seagulls: Faceting Design Diagram

Helpful tips, details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Ten Seagulls"


Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)

Ten Seagulls (GNETP20.JRG)
By Jeff R. Graham
Copyright 1994 83.8%
Light Return Angles for R.I. = 1.73
46 facets + 6 facets on girdle = 52
3-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.522 T/L = 0.452
P/W = 0.416 C/W = 0.229
H/W = (P+C)/W+0.02 = 0.665
P/H = 0.626 C/H = 0.344
Vol./W^3 = 0.273

Gram Book 1 - This design is a little harder to cut than it looks like, but it cuts fairly fast and makes a nice 1-4 ct stone in most to light medium material. Cut in refractive index 1.73 to 1.93 with no changes.

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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