Incredible Rare Sterling Silver Rough Ethiopian Opal Ring, Size 9.75 Rough Ethiopian Opal; Length: 1" .925 Sterling Silver; Weight: 7.7 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.