Faceting Design Diagram: Tut’s Crystal Glitter – Tourmaline, Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite


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

Tuts Crystal Glitter_jeff_graham_facet_design1 Tuts Crystal Glitter_jeff_graham_facet_design2

Tut’s Crystal Glitter (MC125.JRG)
By Jeff R. Graham
Copyright 2006
73.6% Light Return
Angles for R.I. = 1.62
82 facets + 6 facets on girdle = 88
3-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.287 T/L = 0.248 P/W = 0.528
C/W = 0.291 H/W = (P+C)/W+0.02 = 0.838 P/H = 0.629 C/H = 0.347 Vol./W^3 = 0.319

Addition # 12 – Cut in refractive indexes 1.62 to 2.14 with no changes. This is good for light to medium saturations and I like it in light colored Tourmaline. It is not hard to cut and makes a striking stone.

Tuts Crystal Glitter_jeff_graham_facet_design3

 

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.