Information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Brilliant Pear 1.30"
Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)
Brilliant Pear 1.30 (MC36.JRG)
By Jeff R. Graham
Copyright 1999
82.2% Light Return
Angles for R.I. = 1.73
50 facets + 14 facets on girdle = 64
1-fold, mirror-image symmetry
96 index
L/W = 1.302 T/W = 0.623 T/L = 0.479
P/W = 0.428 C/W = 0.192
H/W = (P+C)/W+0.02 = 0.641
P/H = 0.669 C/H = 0.300
Vol./W^3 = 0.260
Addition # 4 - This cuts pretty much like a round brilliant, it works well and is set up for Garnet. I use it a lot in Rose Malaya Garnet, cut to center point on the Pavilion and then cut the girdle to meet, 1cts+. Works in Spinel, Sapphire, as well as man-made materials.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)
Brilliant Pear 1.30 (MC36.JRG)
By Jeff R. Graham
Copyright 1999
82.2% Light Return
Angles for R.I. = 1.73
50 facets + 14 facets on girdle = 64
1-fold, mirror-image symmetry
96 index
L/W = 1.302 T/W = 0.623 T/L = 0.479
P/W = 0.428 C/W = 0.192
H/W = (P+C)/W+0.02 = 0.641
P/H = 0.669 C/H = 0.300
Vol./W^3 = 0.260
Addition # 4 - This cuts pretty much like a round brilliant, it works well and is set up for Garnet. I use it a lot in Rose Malaya Garnet, cut to center point on the Pavilion and then cut the girdle to meet, 1cts+. Works in Spinel, Sapphire, as well as man-made materials.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
