'Eternal Flame' Sterling Silver Ethiopian Opal Ring, Size 5.5 Ethiopian Opal; Length: 0.65"; Back of stone enclosed in silver .925 Sterling Silver; Weight: 3.1 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.