New Estrella & Luna Raw Peridot Gemstone Earrings. 14K Gold Plated or 925 Sterling Silver Hypoallergenic posts. August Birthstone Peridot, the bright green color of nature, is associated with harmony, good health, restful sleep, and peacefulness. Known as the stone of compassion, peridot calms anger by giving renewal to all things. When set in gold, this gem was said to protect the wearer from nightmares. Message to Bundle!