Antique Round About: Faceting Design Diagram
Information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Antique Round About".
Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)
Antique Round About (GNETP43.JRG)
By Jeff R. Graham
Copyright 1997
90.7% Light Return
Angles for R.I. = 1.73
48 facets + 8 facets on girdle = 56
4-fold symmetry
96 index
L/W = 1.000 P/W = 0.415 C/W = 0.189
H/W = (P+C)/W+0.02 = 0.624
P/H = 0.665 C/H = 0.303
Vol./W^3 = 0.183
Addition # 2 - This cut is not hard, but it can be confusing the first time you cut it. There are some simpler ones in my other books, cut them first if you are not sure. A table is a good idea if the stone is large, cut to meet C2, C4, C5. This works well in about any Garnet, 1/2-8cts. 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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