Emeralds are a variety of the mineral beryl (Be3Al2(SiO3)6,) colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5 - 8 on the 10 point Mohs scale of mineral hardness. Most emeralds are highly included, so their brittleness (resistance to breakage) is classified as generally poor. The word "emerald" comes from Latin smaragdus, via Greek smaragdos, its original source being a Semitic word izmargad or the Sanskrit word, marakata, meaning "emerald" or "green". Emerald is a May Birthstone.
Colombian EmeraldTreatment: Natural
Origin: Chivor mine, Colombia
Clarity: VS, eye clean
Weight: .42 carats
Color: medium light very slightly bluish green.
Beautiful medium light very slightly bluish green color. Well cut gem. VS, eye clean clarity.