Bound Star: 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 "Bound Star".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Bound Star (TLINE26.JRG)
By Jeff R. Graham
Copyright 1995
77.5% Light Return
Angles for R.I. = 1.62
66 facets + 5 facets on girdle = 71
5-fold, mirror-image symmetry
80 index
L/W = 1.051 T/W = 0.513 T/L = 0.488
P/W = 0.484 C/W = 0.220
H/W = (P+C)/W+0.02 = 0.724
P/H = 0.668 C/H = 0.304
Vol./W^3 = 0.252
Gram Book 1 - This design cuts pretty easy. The key is to get the steps the right size. It has a nice reflection of a 5 point star(s). I like this design in light colored material, NOTICE 80 index, 1-8cts. Cut in refractive index 1.62 to 1.76 (78.3%) with no changes.
Random - Cosine - ISO
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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