Cap: 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 "Cap".0
By Jeff R. Graham
87.9% Light Return
Angles for R.I. = 1.54
67 facets + 16 facets on girdle = 83
2-fold, mirror-image symmetry
L/W = 1.342 T/W = 0.827 T/L = 0.616
P/W = 0.583 C/W = 0.202
H/W = (P+C)/W+0.02 = 0.806
P/H = 0.724 C/H = 0.251
Vol./W^3 = 0.439
Addition # 5 - Cut in R.I 1.54 to 1.76 (89.1%). This is harder to cut than it looks, be sure your L/W is correct. The table meets can be tough. This is designed for large Quartz, but works well in light man-made materials.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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