American Society of Appraisers Announces “Identification of Jade Treatments” Course

(Press Release)
The American Society of Appraisers has announced its “Identification of Jade Treatments and Imitations, Quality and Value of Jade” course to be held on Thursday, Sept. 8 through Sunday, Sept. 11 in Boca Raton, FL.

Appraisers may be interested to know that fake jade material began making its appearance first in Hong Kong and then later at the Tucson and other gem shows in 2011. It’s marketed as “Canadian Jade” and looks similar to nephrite jade from British Columbia or jadeite jade, but it’s dyed quartzite that could be identified under magnification. This lecture and workshop will teach attendees how to screen for A jadeite jade (natural color), B jade (impregnated with polymer) and C jade (dyed) using only a UV lamp. There are limitations with standard instruments in testing jade, and when piece of Jadeite or Nephrite Jade is in question, it should be sent to a gem laboratory for advanced testing with VIS-NIR and infrared spectrometers.

To register or for more information, visit ASA online or call (800) 272-8258.