Faceting Design Diagram: Drop Zone – Garnet – Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite


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

Drop Zone (MC48.JRG)
By Jeff R. Graham
Copyright 2002
83.4% Light Return
Angles for R.I. = 1.73
37 facets + 12 facets on girdle = 49
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.244 T/L = 0.244
P/W = 0.406 C/W = 0.215
H/W = (P+C)/W+0.02 = 0.641
P/H = 0.633 C/H = 0.336
Vol./W^3 = 0.230

Addition # 7 – The corners are made to float in so that this design can be cut in different sizes. Cut until it looks about right, the “X” can vary in size. This is great for Garnets.


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.