Faceting Design Diagram: Queen Aqua – Beryl – Aquamarine, Emerald, Helidore, Bixbite, Goshenite, Morganite, Golden Beryl


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

Queen Aqua (AQUA4.JRG)
By Jeff R. Graham
Copyright 1993
82.2% Light Return
Angles for R.I. = 1.56
53 facets + 12 facets on girdle = 65
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.543 T/L = 0.543
P/W = 0.447 C/W = 0.196
H/W = (P+C)/W+0.02 = 0.663
P/H = 0.674 C/H = 0.296
Vol./W^3 = 0.266

Addition # 3 – This design is a little harder to cut than it looks at first glance. The C5 facets have to be cut exact for the table to work. If your machine has a keyed dop you can cut the table first(then C5), 1-8cts. Cut in refractive indexes 1.56 to 2.14 (84.3%) with no changes.

 

 


Random – Cosine – ISO

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.