Pent Point: Faceting Design Diagram
Successful tips and a guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Pent Point".
Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)
Pent Point (GNETP33.JRG)
By Jeff R. Graham
Copyright 1996
86.2% Light Return
Angles for R.I. = 1.73
51 facets + 5 facets on girdle = 56
5-fold, mirror-image symmetry
80 index
L/W = 1.051 T/W = 0.537 T/L = 0.511
P/W = 0.424 C/W = 0.151
H/W = (P+C)/W+0.02 = 0.595
P/H = 0.713 C/H = 0.253
Vol./W^3 = 0.196
Gram Book 1 - Note 80 index. Easy to cut and fast. Good in about any material and shallow enough for darker material, 1-6cts. This is a nice change from a round brilliant and sells well. Works in man-made Sapphire and Spinel.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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