Nephrite Bracelet with Filled Cavity
A jade bracelet contains unusual fillers, used to create a smooth surface.
Filled Pearl with Surface Features
A pearl, thought to be natural, is revealed to be a bead-cultured specimen with a pre-drilled nucleus.
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.
Tenebrescent Irradiated Scapolite
The effect of irradiation on scapolite with tenebrescence, a colour-change phenomenon that occurs after exposure to UV light.
Yellow Sapphire Filled with Lead Glass
Lead-glass-filled orangey yellow sapphire undergoes laboratory observation.