Faceting Design Diagram: Mixed up Square – Garnet – Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite


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

Mixed up Square (GNETP15.JRG)
By Jeff R. Graham
Copyright 1994
81.3% Light Return
Angles for R.I. = 1.73
41 facets + 4 facets on girdle = 45
4-fold symmetry
96 index
L/W = 1.000 T/W = 0.400 T/L = 0.400
P/W = 0.432 C/W = 0.208
H/W = (P+C)/W+0.02 = 0.661
P/H = 0.654 C/H = 0.315
Vol./W^3 = 0.311

Gram Book 1 – This design cuts fast and is easy meet point even if it looks like it might be hard. It has a nice large random flash with an unusual look to it. Light to medium material, 1-12cts. 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.