Faceting Design Diagram: Idol Blue – Beryl – Aquamarine, Emerald, Helidore, Bixbite, Goshenite, Morganite, Golden Beryl


Beryl (Aquamarine, Emerald, Helidore, Bixbite, Goshenite, Morganite, Golden Beryl)

Idol Blue Jeff Graham Facet Design

Idol Blue Jeff Graham Facet Design

Idol Blue (MC96.JRG)
By Jeff R. Graham
Copyright 2002
87.8% Light Return
Angles for R.I. = 1.56
133 facets + 8 facets on girdle = 141
4-fold, mirror-image symmetry
64 index
L/W = 1.000 T/W = 0.510 T/L = 0.510 P/W = 0.586
C/W = 0.231 H/W = (P+C)/W+0.02 = 0.837 P/H = 0.700 C/H = 0.276 Vol./W^3 = 0.392

Addition # 12 – Got a large piece of Beryl? This cuts easier than it looks. This obviously needs to be a large stone. Notice that the angles are not far apart on P5 and P6, just cut them to meet.

Idol Blue 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.