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

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

Ojo Glitter Jeff Graham Facet Design Ojo Glitter Jeff Graham Facet Design

Ojo Glitter (MC94.JRG)
By Jeff R. Graham
Copyright 2006
87.5% Light Return
Angles for R.I. = 1.62
129 facets + 12 facets on girdle = 141
2-fold, mirror-image symmetry
96 index
L/W = 1.180 T/W = 0.494 T/L = 0.418 P/W = 0.508

Addition # 12 – Cut in refractive indexes 1.62 to 2.14 (89.2%) with no changes. This is complicated to cut and not for a novice but, actually, once you have cut it correctly it is not difficult at all. This is for a large stone.

Ojo Glitter Jeff Graham Facet Design

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.