Peridot is the traditional birthstone for the month of August.
Besides the birthstone for August, Peridot is also the gemstone for the 15th marriage anniversary. Not only does the color the stones seem almost alien, it indeed has extraterrestrial origins. Peridot or Olivine has been known to be found in Pallasite Meteorites, which are remnants of the birth of our solar system. Thus, making some Peridot truly ancient at 4.5 billion years old. The word Peridot comes from the Arabic "faridat" which means green.