Crystal Keen Glitter:Faceting Design Diagram


Details and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Crystal Keen Glitter".

0

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

Crystal Keen Glitter Jeff Graham Facet DesignCrystal Keen Glitter Jeff Graham Facet Design

Crystal Keen Glitter (MC120.JRG)
By Jeff R. Graham
Copyright 2006
82.7% Light Return
Angles for R.I. = 1.62
103 facets + 15 facets on girdle = 118
3-fold, mirror-image symmetry
96 index
L/W = 1.030 T/W = 0.360 T/L = 0.350 P/W = 0.478
C/W = 0.204 H/W = (P+C)/W+0.02 = 0.702 P/H = 0.681 C/H = 0.291 Vol./W^3 = 0.260

PAVILION

CROWN

Addition # 12 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is designed for Tourmaline and works especially well in light to medium saturations. It is not too hard to cut and I like it in pink Tourmaline.

Crystal Keen Glitter Jeff Graham Facet Design

 

Detailed faceting instructions by Jeff Graham available at The Rock Peddler


Jeff R. Graham

The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.

Never Stop Learning

When you join the IGS community, you get trusted diamond & gemstone information when you need it.

Become a Member

Get Gemology Insights

Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!