Battle Mountain: Faceting Design Diagram
Information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Battle Mountain".
Sunstone (Feldspar, Bytonite, Labradorite, Spectrolite, Orthoclase)
Battle Mountain (SUN39.JRG)
By Jeff R. Graham
Copyright 2006
80.6% Light Return
Angles for R.I. = 1.54
29 facets + 8 facets on girdle = 37
2-fold, mirror-image symmetry
96 index
L/W = 3.000 T/W = 1.216 T/L = 0.405 P/W = 0.450
C/W = 0.244 H/W = (P+C)/W+0.02 = 0.714 P/H = 0.630 C/H = 0.342 Vol./W^3 = 1.026
PAVILION
CROWN
Addition # 11 - Cut in refractive indexes 1.54 to 2.14 with no changes. This is designed for long sliver shaped rough and is good for light to medium color. It will work on light shiller.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
Jeff R. Graham
The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.
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