Faceting Design Diagram: Antique 2 – Garnet – Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite


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

Antique 2 (GNETP5.JRG)
By Jeff R. Graham
Copyright 1993
84.7% Light Return
Angles for R.I. = 1.73
45 facets + 8 facets on girdle = 53
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.366 T/L = 0.366
P/W = 0.406 C/W = 0.207
H/W = (P+C)/W+0.02 = 0.633
P/H = 0.641 C/H = 0.327
Vol./W^3 = 0.240

Gram Book 1 – This design cuts easy and fast in any material. Be careful when you cut the C4 facets to make sure that they are even so that the table meets, 1-6cts. Cut in refractive index 1.78 to 1.93 with no changes.


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.