'Two Oceans' Blue Sea Sediment Jasper, Chalcedony & Sterling Silver Ring, Size 9 Sea Sediment Jasper, Blue Chalcedony; Adjustable ring .925 Sterling Silver; Weight: 9.6 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.