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


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

Glitter Pear Jeff Graham Facet Design

Glitter Pear Jeff Graham Facet Design

Glitter Pear (MC98.JRG)
By Jeff R. Graham
Copyright 2006
80.4% Light Return
Angles for R.I. = 1.62
116 facets + 15 facets on girdle = 131
1-fold, mirror-image symmetry
96 index
L/W = 1.154 T/W = 0.488 T/L = 0.423 P/W = 0.447
C/W = 0.207 H/W = (P+C)/W+0.02 = 0.674 P/H = 0.663 C/H = 0.307 Vol./W^3 = 0.248

Addition # 12 – Cut this in refractive indexes 1.62 to 2.14 with no changes. This cuts like my “Brilliant Pear” designs only, of course, with more facets. This is designed for a large stone, at least 12mm. Use lightly saturated materials.

Glitter Pear 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.