Sterling Silver Agatized Dinosaur Bone Celtic Knot Ring, Size 9.25 Agatized Dinosaur Bone; Celtic Knot Band .925 Sterling Silver; Weight: 5.6 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.