Sterling Silver Peridot Ring with Marcasite This lovely ring has 5 Marquise cut Peridot stones surrounded by marcasites. Peridot is a member of the Chrysolite or Olivine group and is the birthstone for the month of August. Peridot has also been designated as the 16th wedding anniversary stone. This ring makes a perfect gift for many occasions, or just because. This ring is new and a quality sterling silver antique and collectible reproduction. This item is made of high quality sterling silver and comes with a money back guarantee.