Faceting Design Diagram: Watermelon Rise – Feldspar – Bytonite, Labradorite, Spectrolite, Orthoclase


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

Watermelon Rise Jeff Graham Face Design

Watermelon Rise Jeff Graham Face Design

Watermelon Rise (SUN3.JRG)
By Jeff R. Graham
Copyright 2006
84.4% Light Return
Angles for R.I. = 1.54
55 facets + 12 facets on girdle = 67
1-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.609 T/L = 0.609 P/W = 0.457
C/W = 0.165 H/W = (P+C)/W+0.02 = 0.643 P/H = 0.712 C/H = 0.257 Vol./W^3 = 0.218

 

Addition # 11 – Cut in refractive indexes 1.54 to 2.14 with no changes. Depending on the color zones C5,C6 may be omitted and cut a larger table. This works very well in about any colored material but I designed it for pale watermelon.

Watermelon Rise Jeff Graham Face 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.