Trade Codes

O'Neils Affiliated uses a simple code system as a shorthand to state gemstone treatments and types.  
The codes are based on the CIBJO* system, with some additions.

N             Natural.  No Treatment
C             Cultured
H             Heat Only
U             Diffusion
R             Irradiation
W            Waxing
O             Oil/Resin
D             Dyed
B             Bleached
CM         Composite
S             Synthetic
SC         Special Care

*CIBJO The World Jewellery Confederation, or CIBJO (Confédération International de la Bijouterie, Joaillerie, Orfèvrerie des Diamants, Perles et Pierres),