Color Genesis Analysis and Characteristics for Origin Identification of Purple Jadeite

One of the challenges facing gemologists today is the detec- tion of low temperature (below 1200°C)

For many, fossiliferous tree resin, primarily amber, gained wide visibility to the public in 1993 wh

Amber was recently discovered by local coal miners at the Thanbaya Gaing Coal mine located 6.5 km no