GEMBONE JEWELRY & KNIVES FOR SALE

Agatized dinosaur bone, also known as gembone, is a rare and beautiful fossil formed when the porous structure of dinosaur bone is slowly replaced by silica-rich minerals like agate and chalcedony over millions of years. This fossilization process preserves the bone’s internal cell patterns, resulting in intricate, web-like structures that can display vibrant reds, browns, purples, and other striking colors. Most gembone used in jewelry comes from the Late Jurassic Morrison Formation in the American West and is over 150 million years old.

At FossilEra, we offer a wide selection of unique jewelry handcrafted from genuine agatized dinosaur bone. From polished pendants and rings to intricate knife inlays, each piece highlights the natural beauty and one-of-a-kind patterning of this prehistoric material. These timeless creations combine science, history, and artistry—making them perfect for collectors, nature lovers, or anyone looking for a truly extraordinary accessory.