Spike: Faceting Design Diagram
Successful tips, details and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Spike".
Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
Spike (MC47.JRG)
By Jeff R. Graham
Copyright 2001
93.1% Light Return
Angles for R.I. = 1.54
19 facets + 4 facets on girdle = 23
2-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.305 T/L = 0.305
P/W = 0.307 C/W = 0.106
H/W = (P+C)/W+0.02 = 0.434
P/H = 0.709 C/H = 0.245
Vol./W^3 = 0.092
Addition # 7 - This is very nice, simple, and fast. I use it for about any type of rough, although I prefer medium saturation. This is great for earrings and is similar to my "Light House" cut.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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