Polymer-Impregnated Aventurine Quartz, a New Imitation of “Ice Jade”
A bangle, thought to be jadeite jade, is revealed by laboratory testing to be polymer-impregnated aventurine quartz.
The First Identified Non-Nacreous Beaded Cultured Pearl
A report on what appears to be the first non-nacreous beaded cultured pearl examined by a laboratory.
Yellow Sapphire Filled with Lead Glass
Lead-glass-filled orangey yellow sapphire undergoes laboratory observation.