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

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

Shrike (CHECK6.JRG)3.64 carat Amethyst
By Jeff R. Graham
Copyright 2001
85.7% Light Return
Angles for R.I. = 1.54
48 facets + 8 facets on girdle = 56
2-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.453 C/W = 0.212
H/W = (P+C)/W+0.02 = 0.685
P/H = 0.661 C/H = 0.309
Vol./W^3 = 0.225

Addition # 6 – A table can be cut in to meet C5 on a larger stone or a light colored stone. It is a good idea so that you do not have the hole at the apex. This design works very well for saturated material and is really what I designed it for. It will cut well in Peridot, Garnet, Sapphire, Spinel, and man-made materials.

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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