Killer gem designKiller gem design

Killer: 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 "Killer"


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

Killer gem design

Killer (CHECK45.JRG)
By Jeff R. Graham
Copyright 2002
84.7% Light Return
Angles for R.I. = 1.54
31 facets + 4 facets on girdle = 35
2-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.369
T/L = 0.369 P/W = 0.447
C/W = 0.197 H/W = (P+C)/W+0.02 = 0.664
P/H = 0.673 C/H = 0.297
Vol./W^3 = 0.336

Addition # 8 - This crown will take a little work, but the design is basically easy. Roughing in the table before cutting C8 helps establish the proportions. This works great in refractive indexes 1.54 to 2.14 with no changes.

Random - Cosine - ISO

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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