The term, "type-C jade," refers to the enhancement that a jadeite jade gem has undergone.In This case, the jadeite has been bleached to remove unattractive brown staining, then stabilized with polymer resin, and finally dyed to improve or change its color.When a jadeite gem is bleached and stabilized, but not dyed, it is called "type-B."Untreated jadeite, that may or not have had wax applied to its surface, is called, "type-A."
Type-C Jade Classification
||Type-C Jade |
Type-C Jade Optical Properties
Type-C Jade Characteristic Physical properties
||Dyed jadeite is usually unevenly colored but sometimes you might be able to see dye concentrations under magnification. Type C jadeite has been bleached with acid to remove staining then dyed and often been impregnated with wax or polymers. Hopefully the dye is apparent in surface reaching cracks. Be careful not to confuse this with the color streaks in natural jadeite. It will show etch boundaries between the individual crystal grains.Advanced lab testing is usually required to detect polymer impregnation. |