Peridot is a beautiful olive green stone.
It is much less expensive than green tourmaline. Typically found in volcanic rock, this varying green gemstone has occasionally been found in meteorites, and enjoys the unique distinction of being the only precious gem know to exist in outer space. As with all gems, protect peridot from scratches and sharp blows. Do not clean peridot in a home ultrasonic cleaner. Hardness Peridot has a hardness of 6.5.