GTS-Gem Track SystemTm
Last Modified On: About Emerald Gemstone (Panna Stone)? Emerald Gemstone is termed as beryl stone. The emerald stone has spotted in different colors such as red, white, green and red due to the presence of chromium in the stone. The emerald stone is a hard stone by virtue of its hardness which is measured on 7.5 to 8.0 on Mohs