Emerald Gemstone. Emerald is a gemstone and a variety of the mineral beryl colored green by trace amounts of Chromium and sometimes Vanadium. Beryl has a hardness of 7.5-8 on the Mohs-scale. Emeralds are highly costly. Emeralds are found all over the world in countries such as Afghanistan, Australia, Austria, Brazil, Bulgaria, Cambodia, Canada, China,Read More...
