Peridot Necklace. This Handmade necklace features a handset 7mm x 5mm Faceted Natural AA Grade Peridot stone set in a 925 Sterling Silver 6 prong setting. The 1.3mm Flat Oval Cable Chain is Rhodium Plated 925 Sterling Silver for greater tarnish resistance. Polishing cloth for all jewelry included. Shipped in gift box. Peridot is the birthstone for August.