Faceting Design Diagram: Mini Mint – Garnet – Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite


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

Mini Mint (MC67.JRG)
By Jeff R. Graham
Copyright 2002
91.6% Light Return
Angles for R.I. = 1.73
49 facets + 16 facets on girdle = 65
8-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.496 T/L = 0.496
P/W = 0.426 C/W = 0.227
H/W = (P+C)/W+0.02 = 0.673
P/H = 0.633 C/H = 0.337
Vol./W^3 = 0.231

Addition # 7 – This was designed for a piece of mint Garnet I had. The crown is very deep and the pavilion is simple for small light colored rough. Cut this in refractive index 1.62 (80.9% with pavilion at 39 degrees) to 2.20 with no changes. Try it on a small light colored piece of rough, you will be surprised. Mains can be cut in at 39 degrees if you want…

 


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Detailed faceting instructions by Jeff Graham available at The Rock Peddler