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

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.

 

 

 

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