Sterling Silver Biwa Pearl, Amethyst, Citrine, Peridot Ring, Size 7.75 Biwa Pearl, Amethyst, Citrine, Peridot .925 Sterling Silver; Weight: 6.2 grams Genuine Stone. Each item comes shipped in jewelry box. You are looking at a one of a kind piece, the pictured jewelry will be the same exact piece you'll receive. Each item is designed and handcrafted by our artisans.