Faceting Design Diagram: 1st Aqua – Beryl – Aquamarine, Emerald, Helidore, Bixbite, Goshenite, Morganite, Golden Beryl


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

1st Aqua (AQUA2.JRG)
By Jeff R. Graham
Copyright 1993
81.3% Light Return
Angles for R.I. = 1.56
41 facets + 8 facets on girdle = 49
8-fold symmetry
96 index
L/W = 1.000 T/W = 0.446 T/L = 0.446
P/W = 0.445 C/W = 0.234
H/W = (P+C)/W+0.02 = 0.700
P/H = 0.636 C/H = 0.335
Vol./W^3 = 0.260

Gram Book 1 – This is the first aqua I did, it is a simple stone and cuts fast. The P3 facets cut very fast! The Pavilion gives this stone a very nice circular flash, 1/2-6cts. Cut in refractive index 1.56 to 1.93 (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.