Faceting Design Diagram: Have One – Feldspar – Bytonite, Labradorite, Spectrolite, Orthoclase


Sunstone (Feldspar, Bytonite, Labradorite, Spectrolite, Orthoclase)

Have one Jeff Graham Facet Design

Have one Jeff Graham Facet Design

Have One (SUN29.JRG)
By Jeff R. Graham
Copyright 2006
90.1% Light Return
Angles for R.I. = 1.54
15 facets + 6 facets on girdle = 21
2-fold symmetry
96 index
L/W = 3.000 T/W = 2.314 T/L = 0.771 P/W = 0.454
C/W = 0.147 H/W = (P+C)/W+0.02 = 0.621 P/H = 0.732 C/H = 0.236 Vol./W^3 = 0.830

Addition # 11 – Cut in refractive indexes 1.54 to 2.14 with no changes. It seems I always have a piece of rough just about this shape. So here is a design for it. This works well in gold, color, or light shiller.

Have one Jeff Graham Facet Design

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

About the author
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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