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".0
Purdy Girdle (BEAD36.JRG)
By Jeff R. Graham
Angles for R.I. = 1.54
160 facets + 16 facets on girdle = 176
16-fold, mirror-image symmetry
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
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