Grade A, B or C Jade?

Grade A, B or C Jade?

Jade may be enhanced (sometimes called “stabilized”). There are three main methods, sometimes referred to as the ABC Treatment System:

Grade A (or Class A / Type A) jadeite has not been treated in any way except surface waxing. This is the only type we, CollectaneaJade.com, considered the real genuine jade. We don’t sell Jade that’s not Type A. Or other words, we sell only 100% Natural Burma Jade (Jadeite).

Grade B (or Class B / Type B) treatment involves exposing a promising but stained piece of jadeite to chemical bleaches and/or acids and impregnating it with a clear polymer resin. This results in a significant improvement of transparency and color of the material. Currently, infrared spectroscopy is the most accurate test for the detection of polymer in jadeite.

Grade C (or Class C / Type C) jade has been artificially stained or dyed. The red color of Red jade can be enhanced with heat. The effects are somewhat uncontrollable and may result in a dull brown. In any case, translucency is usually lost.

B+C jade is a combination of B and C: it has been both artificially dyed and impregnated.

Grade D jade refers to a composite stone such as a doublet comprising a jade top with a plastic backing.

Grade	Substance	Colour	Texture	Foreign Material
Grade A	Mainly Jadeite	Natural	Natural	No
Grade B	Mainly Jadeite	Removal of Secondary Color	Damage Natural	Expoxene exist
Grade C	Mainly Jadeite	Artificial	Natural or Damaged	Color Agent
Grade B+C	Mainly Jadeite	Artificial	Damaged	Expoxene and Color Agent

You will not find any Grade B, C, B+C, D Jade on www.collectaneajade.com.