Agatized Dino Bone For Bill Magee

40 small pieces between 1-3" wide. 4 large pieces up to 6 inches wide. About 14 lbs in total

This is a chunk of Jurassic aged, agatized dinosaur bone from the Morrison Formation. You can clearly see the preserved cell structure. It may have come from any of the dinosaurs found in the Morrison Formation including Allosaurus, Apatosaurus, Brachiosaurus, Camarasaurus, Diplodocus, Stegosaurus, and Torvosaurus.

It comes from one of our partner's private quarries outside of Dinosaur, Colorado. While complete or even near complete bones are uncommon finds, broken and tumbled fragments of bone are very common in many layers of the Morrison Formation.

About Dinosaur Gembone

Dinosaur gembone, also known as agatized or fossilized dinosaur bone, is a rare and highly prized material formed when the porous structure of dinosaur bone is replaced by silica-rich minerals such as agate, chalcedony, or jasper over millions of years. This fossilization process preserves the intricate internal cell patterns of the original bone, which are often visible as vibrant, web-like structures under the polished surface.

Gembone is typically found in the Morrison Formation of the American West, especially in Utah and Colorado, where Late Jurassic dinosaur remains are common. The resulting stones can display a wide range of striking colors—including reds, browns, purples, blacks, and blues—depending on the specific minerals present during fossilization.

Highly sought after by collectors, lapidary artists, and jewelers, dinosaur gembone is both a geological wonder and a tangible connection to the prehistoric past. Each piece is completely unique, with its own natural patterning and coloration shaped by ancient time and mineral-rich waters.
SOLD
DETAILS
SPECIES
Unknown
LOCATION
Quarry near Dinosaur, Colorado
FORMATION
Morrison Formation
SIZE
1-3" wide
CATEGORY
SUB CATEGORY
ITEM
#36540
GUARANTEE
We guarantee the authenticity of all of our specimens.