fossil

Petrified Wood

Silicified wood (SiO2)

AI-generated identification · may be incorrect

Mohs hardness of 7, displays wood grain patterns in brown or grey colors, waxy to vitreous luster, and an amorphous crystal structure.

Identified October 17, 2026More fossil →

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Physical properties

Mohs hardness of 7, displays wood grain patterns in brown or grey colors, waxy to vitreous luster, and an amorphous crystal structure.

Formation & geological history

Formed through permineralization where organic wood material is gradually replaced by minerals like quartz over millions of years.

Uses & applications

Used in ornamental carvings, high-end jewelry, lapidary art, and as a popular collectible specimen.

Geological facts

Petrified wood retains the microscopic cellular structure of the original tree while being entirely transformed into stone.

Field identification & locations

Identified by visible growth rings combined with a heavy, glass-like rock texture; commonly found in ancient floodplains and volcanic ash beds worldwide.

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