Antique 2: Faceting Design Diagram

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