Coping "X": 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 "Coping "X""0
Coping "X" (CHECK59.JRG)
By Jeff R. Graham
89.7% Light Return
Angles for R.I. = 1.54
77 facets + 8 facets on girdle = 85
4-fold, mirror-image symmetry
L/W = 1.000 T/W = 0.239 T/L = 0.239
P/W = 0.460 C/W = 0.216
H/W = (P+C)/W+0.02 = 0.695
P/H = 0.661 C/H = 0.310
Vol./W^3 = 0.294
Addition # 8 - This cuts pretty easy... The P3 can be varied, but cut P3 as straight, like an "x", as you can. C4 just cuts in to look right and can be varied. This works well in about any material, refractive indexes 1.54 to 2.14 with no changes. This is designed for a large stone...
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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