Lion's Eye: Faceting Design Diagram

Peridot

Lion's Eye (MC116.JRG)
By Jeff R. Graham
Copyright 2006
74.7% Light Return
Angles for R.I. = 1.67
181 facets + 16 facets on girdle = 197
2-fold, mirror-image symmetry
96 index
L/W = 1.268 T/W = 0.432 T/L = 0.341 P/W = 0.643
C/W = 0.315 H/W = (P+C)/W+0.02 = 0.978 P/H = 0.658 C/H = 0.322 Vol./W^3 = 0.504

PAVILION

CROWN

Addition # 12 - Cut this in refractive indexes 1.67 to 2.14 with no changes. This is difficult to cut, I designed it for a large piece of Peridot. P11,C5, just cut to center point, make sure you have the rough because it makes life much easier.

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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