Pulled Four: Faceting Design Diagram
Successful tips,details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called Pulled Four.
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Pulled Four (B21.JRG)
By Jeff R. Graham
Copyright 2000
85.8% Light Return
Angles for R.I. = 1.62
47 facets + 8 facets on girdle = 55
2-fold, mirror-image symmetry
96 index
L/W = 1.159 T/W = 0.491 T/L = 0.423
P/W = 0.487 C/W = 0.240
H/W = (P+C)/W+0.02 = 0.747
P/H = 0.652 C/H = 0.321
Vol./W^3 = 0.285
Addition # 5 - This is a good design for light colored material and works well in Sapphire (84.2%), Peridot, Topaz, Tourmaline, Spinel, Garnet… Watch your L/W, if you are off the crown will need adjustments.
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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