Omen: Faceting Design Diagram

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


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

Jeff Graham Facet Design

Jeff Graham Facet Design

Omen (MIR54.JRG)
By Jeff R. Graham
Copyright 2005
85.2% Light Return
Angles for R.I. = 1.54
40 facets + 4 facets on girdle = 44
4-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.309
H/W = (P+C)/W+0.02 = 0.764 P/H = 0.569 C/H = 0.405
Vol./W^3 = 0.342






Addition # 10 - A table can be cut on a large stone. This is a quick, easy cut with a very nice flower type of flash. Cut this in refractive indexes 1.54 to 2.14 with no changes. About any stone saturation works well, I prefer lighter colors. Note: The C2 only meets at the corners, just float the other facets in as evenly as you can. A table can be cut in on 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.

Never Stop Learning

When you join the IGS community, you get trusted diamond & gemstone information when you need it.

Become a Member

Get Gemology Insights

Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!