Contort: 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 "Contort".
Sunstone (Feldspar, Bytonite, Labradorite, Spectrolite, Orthoclase)
By Jeff R. Graham
81.8% Light Return
Angles for R.I. = 1.54
27 facets + 6 facets on girdle = 33
2-fold, mirror-image symmetry
L/W = 2.012 T/W = 0.576 T/L = 0.287 P/W = 0.456
C/W = 0.242 H/W = (P+C)/W+0.02 = 0.718 P/H = 0.635 C/H = 0.337 Vol./W^3 = 0.566
Addition # 11 - Cut in refractive indexes 1.54 to 2.14 with no changes. Note: Cut the L/W and then just cut the P3(G) until they point. This works well in colored material and watermelon. The points can be fragile so care must be taken.
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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