Magma: Faceting Design Diagram

Successful tips, details, and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Magma".


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

Jeff Graham Facet DesignJeff Graham Facet Design

Magma (MIR69.JRG)
By Jeff R. Graham
Copyright 2005
91% Light Return
Angles for R.I. = 1.54
45 facets + 8 facets on girdle = 53
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.237 T/L = 0.237 P/W = 0.420
C/W = 0.244 H/W = (P+C)/W+0.02 = 0.684 P/H = 0.614 C/H = 0.357 Vol./W^3 = 0.221



Addition # 10 - Cut in refractive indexes 1.54 to 2.14 with no changes. This is fairly easy to cut and has distinct flower-like reflections. Cut in light to medium saturations and I like it cut in 8mm or larger stones.

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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