Purdy Girdle: Faceting Design Diagram

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


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

Purdy Girdle Jeff Graham Facet Design1Purdy Girdle Jeff Graham Facet Design2

Purdy Girdle (BEAD36.JRG)
By Jeff R. Graham
Copyright 200
Angles for R.I. = 1.54
160 facets + 16 facets on girdle = 176
16-fold, mirror-image symmetry
96 index
L/W = 1.000
P/W = 0.688 C/W = 0.688
H/W = (P+C)/W+0.02 = 1.396
P/H = 0.493 C/H = 0.493
Vol./W^3 = 0.523




Addition # 14 - Note that this design has a girdle for setting the stone. It can be left off and the bead drilled. This works well in light to medium saturated materials.

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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