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