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


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

Sun Rays Jeff Graham Facet Design

Sun Rays Jeff Graham Facet Design

Sun Rays (SUN36.JRG)
By Jeff R. Graham
Copyright 2006
87.2% Light Return
Angles for R.I. = 1.54
22 facets + 10 facets on girdle = 32
2-fold, mirror-image symmetry
96 index
L/W = 2.000 P/W = 0.450 C/W = 0.196
H/W = (P+C)/W+0.02 = 0.667 P/H = 0.675 C/H = 0.295 Vol./W^3 = 0.543

Addition # 11 – Cut in refractive indexes 1.54 to 2.14 with no changes. This is for very shallow material. It will work well in about any material. Note: P3(G), P4(G) are equal in size. The crown may take a little tweaking to make center point.

Sun Rays Jeff Graham Facet Design

Detailed faceting instructions by Jeff Graham available at The Rock Peddler