Star Gate 6: Faceting Design Diagram


Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Star Gate 6".

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

Star Gate 6 (GNETR4.JRG)
By Jeff R. Graham
Copyright 1993
87% Light Return
Angles for R.I. = 1.73
103 facets + 6 facets on girdle = 109
6-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.554 T/L = 0.480
P/W = 0.443 C/W = 0.236
H/W = (P+C)/W+0.02 = 0.698
P/H = 0.634 C/H = 0.338
Vol./W^3 = 0.284

Gram Book 1 - This is a good design for a large piece of Rhodolite rough. Because of the number of facets, I recommend that this stone should be cut on 2cts+ size. About any other light-colored Garnet will work well. Works in man-made YAG, Sapphire, 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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