Amber from the Thanbaya Gaing Coal Mine, Minbu Township, Magwe Region, Myanmar

Euclase, monoclinic crystal system—is a seldomly occurring mineral and with a Mohs hardness of 7 a

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

Gemology is traditionally practiced in laboratories, focused on identifying and analyzing gemstones.