Ephemeral: Faceting Design Diagram
Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Ephemeral".
Sunstone (Feldspar, Bytonite, Labradorite, Spectrolite, Orthoclase)
Ephemeral (SUN11.JRG)
By Jeff R. Graham
Copyright 2006
94.2% Light Return
Angles for R.I. = 1.54
33 facets + 8 facets on girdle = 41
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.193 T/L = 0.193 P/W = 0.466
C/W = 0.158 H/W = (P+C)/W+0.02 = 0.645 P/H = 0.723 C/H = 0.246 Vol./W^3 = 0.218
PAVILION
CROWN
Addition # 11 - Cut in refractive indexes 1.54 to 2.14 with no changes. This is designed for thin good-colored rough and/or shiller. This is very bright and, if cutting in heavy shiller, be sure the flash is 90 degrees to crown. This is also excellent in saturated Garnets.
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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