Diamonds Up: 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 "Diamond Up".
Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
Diamonds Up (CHECK21.JRG)
By Jeff R. Graham
Copyright 2001
80.5% Light Return
Angles for R.I. = 1.54
81 facets + 16 facets on girdle = 97
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.394 T/L = 0.394
P/W = 0.528 C/W = 0.180
H/W = (P+C)/W+0.02 = 0.727
P/H = 0.725 C/H = 0.247
Vol./W^3 = 0.295
Addition # 6 - This can be cut in refractive indexes 1.54 to 1.93 with no changes. This should be cut in a light to medium colored material as it will darken a bit.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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