Emerald is a gemstone and a variety of the mineral beryl colored green by trace amounts of chromium and sometimes vanadium. Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a very popular precious mineral, giving name to the bright shade of green. It is widely know for being a classic stone of love and romance, and is reputed to bring passion and home bliss. It is also said to be a stone that helps balancing relationships and friendships.