Successful tips, details, and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Nimble"
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Nimble (DOME9.JRG)
By Jeff R. Graham
Copyright 2007
84% Light Return
Angles for R.I. = 1.62
73 facets + 8 facets on girdle = 81
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.159 T/L = 0.159 P/W = 0.397
C/W = 0.315 H/W = (P+C)/W+0.02 = 0.733 P/H = 0.542 C/H = 0.431 Vol./W^3 = 0.255
PAVILION
CROWN
Addition # 13 - This is pretty fast to cut and deep to help darken light material. This works in R.I. 1.62to 1.76 with no changes. I designed this for pastel Afghan nodules and it yields well for the shape.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Nimble (DOME9.JRG)
By Jeff R. Graham Copyright 2007 84% Light Return Angles for R.I. = 1.62 73 facets + 8 facets on girdle = 81 4-fold, mirror-image symmetry 96 index L/W = 1.000 T/W = 0.159 T/L = 0.159 P/W = 0.397 C/W = 0.315 H/W = (P+C)/W+0.02 = 0.733 P/H = 0.542 C/H = 0.431 Vol./W^3 = 0.255
PAVILION
CROWN
Addition # 13 - This is pretty fast to cut and deep to help darken light material. This works in R.I. 1.62to 1.76 with no changes. I designed this for pastel Afghan nodules and it yields well for the shape.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
