Peridot is an ancient stone, mined at least as long ago as the ancient Greeks. Peridot is also often called chrysolite or olivine, which is the proper name for the mineral. Its color is its most important quality, and can range from yellow green to a striking chartreuse. The chrysolite name often refers to peridot that is more yellow than green. Peridot has good clarity, and is cut with facets and as cabochons.
Peridot was thought to offer protection from depression and deception in Roman times, was used for inspiration and eloquence in The Middle Ages, and was also thought to cure liver disease and promote friendship. It was also believed to ensure good thoughts in the mind of the wearer, and is associated with healing.
Peridot is the birthstone of August. A crystal form of magnesium, iron and silicon, peridot's color varies with the proportion of the ingredients. It has a Mohs hardness rating of 6. Peridot is relatively soft and should be protected from hard wear.