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
Clarity: lightly included; eye clean
Weight: .46 carats
Color: Very Slightly Bluish Green
Beautiful medium tone very slightly bluish green color. Well cut calibrated gem. Lightly included eye clean clarity.