Faceting Design Diagram: Confederate Button – Feldspar – Bytonite, Labradorite, Spectrolite, Orthoclase


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

Confederate Button Jeff Graham Facet Design

Confederate Button Jeff Graham Facet Design

Confederate Button (SUN8.JRG)
By Jeff R. Graham
Copyright 2006
95.6% 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 = 0.207 T/L = 0.207 P/W = 0.483
C/W = 0.125 H/W = (P+C)/W+0.02 = 0.628 P/H = 0.769 C/H = 0.199 Vol./W^3 = 0.233

Addition # 11 – Cut this in refractive indexes 1.54 to 2.14 with no changes. This works well in dark Garnet. I designed it for thin color/shiller rough. It is designed to be a very bright reflector. Note: There are no breaks on the girdle/crown. You can cut some in at 68 if you want.

Confederate Button 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.