Faceting Design Diagram: Quickie 3 – Garnet – Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite


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

Quickie 3 (GNETP26.JRG)
by Jeff R. Graham
Copyright 1995
90.3% Light Return
Angles for R.I. = 1.73
29 facets + 8 facets on girdle = 37
4-fold symmetry
96 index
L/W = 1.000 T/W = 0.562 T/L = 0.562
P/W = 0.387 C/W = 0.159
H/W = (P+C)/W+0.02 = 0.566
P/H = 0.684 C/H = 0.281
Vol./W^3 = 0.203

Gram Book 1 – Here is another fast easy design for garnet. Notice the depth of the stone is shallow to help lighten darker materials, 1/2-4cts. This works in man-made Sapphire and Spinel.


Random – Cosine – ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Gram Faceting Archive of Information
This edited version of an article by the late Jeff Graham is part of a special archived informational series from Gram Faceting. Used with permission.