Faceting Design Diagram: Kiss’n Fish – Tourmaline – Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite


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

Kiss’n Fish (CHECK65.JRG)
By Jeff R. Graham
Copyright 2003
76% Light Return
Angles for R.I. = 1.62
31 facets + 8 facets on girdle = 39
2-fold, mirror-image symmetry
96 index
L/W = 3.010 T/W = 0.945 T/L = 0.314
P/W = 0.450 C/W = 0.327
H/W = (P+C)/W+0.02 = 0.797
P/H = 0.564 C/H = 0.411
Vol./W^3 = 1.341

Addition # 8 – This is designed for long narrow Tourmaline crystals, and makes a nice stone in about any material. I use it for the occasional multi-colored long crystals I come across. This is fairly simple but the keel can be tough to polish because of it’s length. Cut this in refractive indexes 1.62 to 2.14 with no changes.


Random – Cosine – ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Gram Faceting Archive of Information
This edited version of an article by the late Jeff Graham is part of a special archived informational series from Gram Faceting. Used with permission.