Faceting Design Diagram: Salvation – Feldspar – Bytonite, Labradorite, Spectrolite, Orthoclase


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

Salvation Jeff Graham Facet Design

Salvation Jeff Graham Facet Design

Salvation (SUN6.JRG)
By Jeff R. Graham
Copyright 2006
86.0 % Light Return
Angles for R.I. = 1.54
33 facets + 8 facets on girdle = 41
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.284 T/L = 0.284 P/W = 0.458
C/W = 0.187 H/W = (P+C)/W+0.02 = 0.665 P/H = 0.689 C/H = 0.281 Vol./W^3 = 0.236

 

Addition # 11 – Cut this in refractive indexes 1.54 to 2.14 with no changes. This works well in Garnet. I designed this for small color spots and/or pale pieces of color. This is a reflector bottom to help prevent color mixing.

Salvation Jeff Graham Facet Design

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Gram Faceting Archive of Information
This edited version of an article by the late Jeff Graham is part of a special archived informational series from Gram Faceting. Used with permission.