Peridot is the gemstone variety of the mineral olivine. The most beautiful peridots come from the border area between Pakistan and Afghanistan. Fine peridot has also been found in Myanmar (Burma) for hundreds of years. Although peridot is also mined in the US, China, East Africa, and North Korea, the sizes are rarely very large and stones over five carats are quite rare. Peridot is one of the few gemstones which is available in only one color.