Sunstone (Feldspar, Bytonite, Laboradorite, Spectrolite, Orthoclase)
Slayer (SUN32.JRG)
By Jeff R. Graham
Copyright 2006
85.4% Light Return
Angles for R.I. = 1.54
15 facets + 4 facets on girdle = 19
2-fold symmetry
96 index
L/W = 1.000 T/W = 0.927 T/L = 0.927 P/W = 0.529
C/W = 0.148 H/W = (P+C)/W+0.02 = 0.697 P/H = 0.759 C/H = 0.212 Vol./W^3 = 0.380
Addition # 11 – Cut in refractive indexes 1.54 to 2.14 with no changes. This is designed for color and will mix, so be sure that your colors mix well. This is a little different to cut but not hard with the exception of tweaking the meets on the crown.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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.
