Piller : 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 "Piller".


Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)

Piller (B29.JRG) 10.18 carat Nigerian pink Tourmaline
By Jeff R. Graham
Copyright 2001
82.7% Light Return
Angles for R.I. = 1.62
55 facets + 8 facets on girdle = 63
2-fold, mirror-image symmetry
96 index
L/W = 1.228 T/W = 0.830 T/L = 0.676
P/W = 0.539 C/W = 0.166
H/W = (P+C)/W+0.02 = 0.726
P/H = 0.743 C/H = 0.229
Vol./W^3 = 0.316

Addition # 5 - Notice that the C2 on the crown is left for taking up slack if your L/W is slightly off. This can be cut in almost any R.I. with no changes (88.2% in 1.76). It's fast to cut and nice in almost any good colored material.



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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