Faceting Design Diagram: Glitter Drop – Sapphire / Corundum – Ruby, Ceylon, Padparadschah, Pink, Yellow, Green


Sapphire / Corundum (Ruby, Ceylon, Padparadschah, Pink, Yellow, Green)

Glitter Drop Jeff Graham Facet Design Glitter Drop Jeff Graham Facet Design

Glitter Drop (MC99.JRG)
By Jeff R. Graham
Copyright 2006
83.3% Light Return
Angles for R.I. = 1.76
116 facets + 17 facets on girdle = 133
1-fold, mirror-image symmetry
96 index
L/W = 1.108 T/W = 0.474 T/L = 0.428 P/W = 0.423
C/W = 0.207 H/W = (P+C)/W+0.02 = 0.650 P/H = 0.650 C/H = 0.319 Vol./W^3 = 0.243

Gram Book 1 – Cut in refractive indexes 1.76 to 2.14 with no changes. This is designed for light to medium saturated material. Note: The P8 just meets the P5 facet junction at 15-81.

Glitter Drop 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.