Dinosaur Bone Bracelet with Inlaid Gem Dino Bone

The bone used in our dinosaur bone jewelry is fossilized dinosaur bone.  Fossilized dinosaur bone occurs when the fallen dinosaur is quickly covered in an oxygen deprived environment such as mud, silt or ash which slows down decay.  Over time the natural bone is replaced by various minerals taking on the shape of the bone and sometimes even the cellular structure of the bone marrow spaces.  In rare instances the organic dinosaur bone material is replaced by agate and becomes agatized dinosaur bone, also known as gembone.  Gembone occurs in various colors ranging from earthtones and grays to vibrant yellows, oranges and reds.  It is estimated that 95% of the agatized dinosaur bone found is composed of browns, grays and tans.  Only 5% are the more colorful blues, oranges, reds, whites, and yellows making dinosaur bone in these colors valuable and rare.  The cell walls vary in color but the most desired is the well defined black spider webbing that contrasts nicely with the vibrant colors of the cells.  The best gembone for jewelry use comes from the Morrison Formation on the Colorado Plateau in the Four Corners Area of the Western United States and dates back to 150 million years ago. The Morrison Formation is a distinctive sequence of Late Jurassic sedimentary rock which has been the most fertile source of dinosaur fossils in North America.