Agatized Dinosaur Bone Pendant - Silver & 18K Gold

This is a sterling silver and 18K gold rimmed pendant inlaid with 150 million year old, agatized dinosaur bone from the Morrison Formation of Colorado. The internal cell structure of the bone can easily be seen thanks to the superb polishing job. This fine piece of jewelry was created by master craftsman Mark Castagnoli who's been creating unique pieces of jewelry for nearly 30 years.

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
Colorado
FORMATION
Morrison Formation
SIZE
Pendant .61" in diameter
CATEGORY
SUB CATEGORY
ITEM
#7890
GUARANTEE
We guarantee the authenticity of all of our specimens.