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


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

Glitter Jeff Graham Facet Design Glitter Jeff Graham Facet Design

Glitter (MC85.JRG)
By Jeff R. Graham
Copyright 2003
80.7% Light Return
Angles for R.I. = 1.62
145 facets + 16 facets on girdle = 161
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.443 T/L = 0.443 P/W = 0.462
C/W = 0.230 H/W = (P+C)/W+0.02 = 0.712 P/H = 0.648 C/H = 0.324 Vol./W^3 = 0.264

Addition # 12 – It helps to cut the table in before cutting C7. This is not hard to cut, just a lot of work. Cut this in refractive indexes 1.62 to 2.14 (89.2%) with no changes.

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.