Faceting Design Diagram: Raja’s 1st – Garnet – Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite


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

Raja’s 1st (MC18.JRG)
by Jeff R. Graham
Copyright 1998
90.4% Light Return
Angles for R.I. = 1.74
37 facets + 4 facets on girdle = 41
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.494 T/L = 0.494
P/W = 0.419 C/W = 0.136
H/W = (P+C)/W+0.02 = 0.574
P/H = 0.729 C/H = 0.236
Vol./W^3 = 0.247

Addition # 4 – This cuts easy, the crown can be cut lower for darker material, 1/4 – 2cts. This was designed for a friend of mine in Africa that needed a square cut for green Garnet. Cut in any Garnet or Sapphire, including man-made.


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.