Emerald, from Columbia (REF:EMER4)

Emerald is a green variety of Beryl, a beryllium aluminium silicate mineral. It’s pigment is chrome and/or vanadium. Its crystal system is hexagonal (trigonal). The term Emerald is derived from the Greek smaragdos, which means ‘green stone’ and in ancient times was applied to a number of other green gemstones.