Merger: Faceting Design Diagram

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

Merger (SUN12.JRG)
By Jeff R. Graham
Copyright 2006
93.5% Light Return
Angles for R.I. = 1.54
33 facets + 4 facets on girdle = 37
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.519 T/L = 0.519 P/W = 0.466
C/W = 0.162 H/W = (P+C)/W+0.02 = 0.649 P/H = 0.719 C/H = 0.250 Vol./W^3 = 0.293

PAVILION

CROWN

Addition # 11 - Cut in refractive indexes 1.54 to 2.14 with no changes. This is not hard to cut and finishes a very bright stone. The Crown step can be adjusted to fit your rough, deeper is better. This works well in Garnets too.

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Jeff R. Graham

The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.

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