Faceting Design Diagram: Sun Boon – Feldspar – Bytonite, Labradorite, Spectrolite, Orthoclase


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

Sun Boon Jeff Graham Facet Design

Sun Boon Jeff Graham Facet Design

Sun Boon (SUN40.JRG)
By Jeff R. Graham
Copyright 2006
83.5% Light Return
Angles for R.I. = 1.54
21 facets + 8 facets on girdle = 29
2-fold, mirror-image symmetry
96 index
L/W = 1.500 T/W = 1.282 T/L = 0.855 P/W = 0.450
C/W = 0.129 H/W = (P+C)/W+0.02 = 0.599 P/H = 0.752 C/H = 0.215 Vol./W^3 = 0.380

Addition # 11 – Cut in refractive indexes 1.54 to 2.14 with no changes. This is designed for thin multi-colored rough and works best in medium to darker saturation. Note: The corners float in and are just cut to look like the diagram, they can vary a little.

Sun Boon 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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