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)
By Jeff R. Graham
82.7% Light Return
Angles for R.I. = 1.62
55 facets + 8 facets on girdle = 63
2-fold, mirror-image symmetry
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
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