Spike: Faceting Design Diagram

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