Crystal Trig Glitter: Faceting Design Diagram

Successful tips and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called Crystal Trig Glitter


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

Crystal Trig Glitter Jeff Graham Facet DesignCrystal Trig Glitter Jeff Graham Facet Design

Crystal Trig Glitter (MC111.JRG)
By Jeff R. Graham
Copyright 2006
84% Light Return
Angles for R.I. = 1.62
76 facets + 6 facets on girdle = 82
3-fold, mirror-image symmetry
96 index
L/W = 1.073 T/W = 0.364 T/L = 0.339 P/W = 0.478
C/W = 0.246 H/W = (P+C)/W+0.02 = 0.744 P/H = 0.643 C/H = 0.330 Vol./W^3 = 0.277



Addition # 12 - Cut in refractive indexes 1.62 to 2.14 with no changes. I designed this Trig variation for Aquamarine or any light to medium saturated material. This works in Quartz (41 degrees) although the performance is a little lower (74.8%). Note: C2 tier only meets the girdle at the corners, cutting the tier center point is the easiest way to have even facets.

Crystal Trig 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.

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