sedimentary/fossil

Dinosaur Bone

Agatized Dinosaur Bone

AI-generated identification · may be incorrect

Hardness varies depending on the replacing minerals (often quartz/agate, hardness 6.5-7). Color varies widely based on impurities (yellow, brown, red, black). Often shows cell structure of the original bone.

Identified June 17, 2026More sedimentary/fossil →

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Physical properties

Formation & geological history

Formed through the process of permineralization, where groundwater carrying dissolved minerals like silica seeps into buried dinosaur bones. The minerals precipitate in the pore spaces, replacing organic material over millions of years.

Uses & applications

Mainly used in lapidary arts for cabochons, jewelry, and collecting. Also holds scientific value for paleontological studies.

Geological facts

Also known as 'gembone', it's one of the few fossils commonly cut and polished for jewelry. The intricate patterns are the preserved cell walls of the original dinosaur bone.

Field identification & locations

Identify by looking for the distinct cellular or spongy structure (trabecular bone). Often found in the Morrison Formation in the western United States (Colorado, Utah, Wyoming).