Faceting Design Diagram: Whoa Squared – Feldspar – Bytonite, Labradorite, Spectrolite, Orthoclase


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

Whoa Squared Jeff Graham Facet Design

Whoa Squared Jeff Graham Facet Design

Whoa Squared (SUN33.JRG)
By Jeff R. Graham
Copyright 2006
84.7% Light Return
Angles for R.I. = 1.54
23 facets + 8 facets on girdle = 31
2-fold symmetry
96 index
L/W = 1.000 T/W = 0.878 T/L = 0.878 P/W = 0.467
C/W = 0.139 H/W = (P+C)/W+0.02 = 0.626 P/H = 0.746 C/H = 0.222 Vol./W^3 = 0.313

Addition # 11 – Cut in refractive indexes 1.54 to 2.14 with no changes. This is more difficult to cut than it may look. The crown will take some tweaking to get right. This is designed for small color spots and medium saturation. Note: The crown breaks can be cut short then the steps cut and re-cut the breaks to meet.

Whoa Squared 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.