Amazing Sterling Silver Rare Rough Ethiopian Opal Ring, Size 7.5 Rare Rough Ethiopian Opal; Length: 0.85" solid .925 Sterling Silver; Weight: 8.6 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.