Faceting Design Diagram: Gorgeous Crystal Glitter – Peridot
Gorgeous Crystal Glitter (MC123.JRG)
By Jeff R. Graham
Copyright 2006
85.5% Light Return
Angles for R.I. = 1.62
103 facets + 9 facets on girdle = 112
3-fold, mirror-image symmetry
96 index
L/W = 1.077 T/W = 0.400 T/L = 0.372 P/W = 0.492
C/W = 0.233 H/W = (P+C)/W+0.02 = 0.745 P/H = 0.661 C/H = 0.313 Vol./W^3 = 0.315
Addition # 12 – Cut in refractive indexes 1.62 to 2.14 with no changes. This is designed for Tourmaline, particularly light to medium saturations. It is pretty easy to cut and has a lot of sparkle.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
About the author
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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