Deva: Faceting Design Diagram
Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Deva".
Sunstone (Feldspar, Bytonite, Labradorite, Spectrolite, Orthoclase)
By Jeff R. Graham
77.3% Light Return
Angles for R.I. = 1.54
46 facets + 5 facets on girdle = 51
5-fold, mirror-image symmetry
L/W = 1.051 T/W = 0.375 T/L = 0.356 P/W = 0.501
C/W = 0.225 H/W = (P+C)/W+0.02 = 0.746 P/H = 0.672 C/H = 0.301 Vol./W^3 = 0.278
Addition # 11 - Cut in refractive indexes 1.54 to 2.14 with no changes. This is designed for clear or pale colors. It works well in about any lightly saturated material. I like it in Aquamarine. Note: The girdle can be cut in first and the P1 cut to meet so that center point is not needed and it saves rough.
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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