This emerald is from the Mun. de Muzo, in the Vasquez-Yacopi Mining District, Boyaca Department, Colombia. There are over a dozen mines in the area that produce most of the emeralds in the world. Emerald is the rare green, gem, variety of beryl. Beryl comes in a variety of colors and emerald is the most sort after. It is a silicate that contains the elements Be, Al, Si, and O. Emerald gets its unique color from the trace elements chromium or vanadium that are incorporated in the crystal lattice. This is transparent crystal that has a glass luster and some internal veiling. It has a flat termination and a healed basal attachment point. This crystal measures approximately 8 x 5 x 3.5 mm.