Faceting Design Diagram: Sun Glitter – Peridot


Peridot

Sun Glitter Jeff Graham Facet Design Sun Glitter Jeff Graham Facet Design

Sun Glitter (MC117.JRG)
By Jeff R. Graham
Copyright 2006
73.7% Light Return
Angles for R.I. = 1.67
157 facets + 16 facets on girdle = 173
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

Addition # 12 – Cut in refractive indexes 1.67 to 2.14 with no changes. This is for lightly saturated materials and cuts a bit like “Lion’s Eye”, although little more complicated. Cut this in a large stone.

Sun Glitter Jeff Graham Facet Design

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Gram Faceting Archive of Information
This edited version of an article by the late Jeff Graham is part of a special archived informational series from Gram Faceting. Used with permission.