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

Puzzle Palace (SUN25.JRG)
By Jeff R. Graham
Copyright 2006
80.9% Light Return
Angles for R.I. = 1.54
28 facets + 6 facets on girdle = 34
3-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.536 T/L = 0.465 P/W = 0.465
C/W = 0.228 H/W = (P+C)/W+0.02 = 0.713 P/H = 0.652 C/H = 0.320 Vol./W^3 = 0.291

Addition # 11 - Cut in refractive indexes 1.54 to 2.14 with no changes. This is fast to cut and designed for color spots. Put the color centered in the pavilion. This also works well in Beryl. Be careful and make the crown steps accurate.

 

 

 

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