Charm: 9mm L x 5mm W Solid Gold 2.5mm Round Faceted Genuine Gemstone in Peridot Matte Finished Gold August Birthstone Charm in Genuine Peridot Peridot (pronounced peh-ri-doh) is a bright lime green color. Add this sparkling peridot gemstone charm to any necklace or bracelet to represent someone born in August. This solid gold pendant features a flush set genuine peridot gemstone.This faceted peridot gemstone is the birthstone for August. Birthstone prices vary depending on the cost of the stone. The pictures in Alternate Images are there to show the scale of the product. Colors and other details may vary.