Advancing Fei Cui Origin Authentication: A comparison of green fei cui from Myanmar, Guatemala, Italy and Russia

This paper aims to present the history of the modification of Baltic amber (succinite), and particul

Most of the spinels are found in shades of red to purple. Colourless, green and cobalt bearing varie

This study describes hessonite (Fe-bearing variety of grossular garnet), found in the Birlamunda vil