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. It’s unique color is from trace elements either chromium or vanadium that are incorporated in the crystal lattice. This is a gem quality light green double terminated crystal. It is a sharp six-sided prism that has a flat top and a complex base (probably a healed former attachment point). The bottom of the crystal has some light flawing and the top appears flawless. This crystal measures approximately 9 x 5 x 4 mm and it weighs 1.9 carats.