Screamer: Faceting Design Diagram

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


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

screamer Jeff Graham gemstone facet design

screamer Jeff Graham gemstone facet design

Screamer (MIR43.JRG)
By Jeff R. Graham
Copyright 2005

91.3% Light Return
Angles for R.I. = 1.54
32 facets + 8 facets on girdle = 40
8-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.278
H/W = (P+C)/W+0.02 = 0.732 P/H = 0.594 C/H = 0.379
Vol./W^3 = 0.235





Random - Cosine - ISO


Addition # 10 - This works well in about any material, but it's designed for lightly saturated materials. Cut in refractive indexes 1.54 to 1.73 with no changes. This is particularly nice in earrings and I like it in Tourmaline. A table can be cut on a large stone, leaving a C5 is a nice effect on smaller stones.


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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