Faceting Design Diagram: Trig – Quartz – Citrine, Amethyst, Ametrine, Smokey, Rose


Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

Trig (CHECK12.JRG) 3.03 carat Aquamarine
By Jeff R. Graham
Copyright 2001
83.7% Light Return
Angles for R.I. = 1.54
52 facets + 12 facets on girdle = 64
3-fold, mirror-image symmetry
96 index
L/W = 1.013 T/W = 0.239 T/L = 0.236
P/W = 0.391 C/W = 0.199
H/W = (P+C)/W+0.02 = 0.609
P/H = 0.641 C/H = 0.326
Vol./W^3 = 0.192

Addition # 6 – Notice that the crown on this design is deep to help darken light colored material. The only light loss is at the edge of the girdle, where prongs will cover it.


Random – Cosine – ISO

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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