Faceting Design Diagram: Warrior – Tourmaline – Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite


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

Warrior (MC44.JRG) Forest green Tourmaline Warrior
By Jeff R. Graham
Copyright 2001
95.1% Light Return
Angles for R.I. = 1.62
40 facets + 12 facets on girdle = 52
3-fold, mirror-image symmetry
96 index
L/W = 1.066 T/W = 0.303 T/L = 0.284
P/W = 0.426 C/W = 0.166
H/W = (P+C)/W+0.02 = 0.612
P/H = 0.696 C/H = 0.271
Vol./W^3 = 0.211

Addition # 7 – This is not meant to be a large stone. I usually do not cut it larger than 2 to 3 carats. This design will help lighten up material that is just a little on the dark side. The large triangular shape on the crown reads well from a distance and is interesting. Cut in refractive indexes 1.62 to 2.20 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.