Quickie: Faceting Design Diagram

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

Quickie (GNETP6.JRG)
By Jeff R. Graham
Copyright 1993
89.3% Light Return
Angles for R.I. = 1.73
29 facets + 8 facets on girdle = 37
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.422 T/L = 0.422
P/W = 0.356 C/W = 0.165
H/W = (P+C)/W+0.02 = 0.542
P/H = 0.658 C/H = 0.305
Vol./W^3 = 0.174

Gram Book 1 - This cut is designed to be fast with good light return and shallow to help lighten up dark Pyrope material. This is a good cut for an intermediate cutter and is fast. It works well in man-made Sapphire and CZ also.

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler