Antwerp: Faceting Design Diagram
Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Antwerp".
Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
Antwerp (CHECK57.JRG)
By Jeff R. Graham
Copyright 2003
84.6% Light Return
Angles for R.I. = 1.54
35 facets + 8 facets on girdle = 43
2-fold, mirror-image symmetry
96 index
L/W = 1.500 T/W = 0.500 T/L = 0.334
P/W = 0.451 C/W = 0.234
H/W = (P+C)/W+0.02 = 0.705
P/H = 0.640 C/H = 0.332
Vol./W^3 = 0.543
Addition # 8 - Cut in refractive indexes 1.54 to 2.14 with no changes. This works well in about any material and is quite good for closed "c" axis Tourmaline.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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