Faceting Design Diagram: Mock Check Square – Quartz – Citrine, Amethyst, Ametrine, Smokey, Rose

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

Mock Check Square (MC4.JRG) Tourmaline cut by Tony Carson
By Jeff R. Graham
Copyright 1999
79.4% Light Return
Angles for R.I. = 1.54
16 facets + 4 facets on girdle = 20
2-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.489 C/W = 0.158
H/W = (P+C)/W+0.02 = 0.668
P/H = 0.733 C/H = 0.237
Vol./W^3 = 0.351

Addition # 4 – In R.I. Tourmaline/Topaz this is 84%. This cuts fast, just cut the steps as even as you can. There are no meets, this is very easy to cut. It makes nice earrings, I like it in lighter materials, the checker flash is great, 1/2ct+. Cut this in R.I. 1.54 to 1.76 (88.3%) without changes.

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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