African Petrified Wood Agate 10mm Round - 15-16 Inch Cube It's often mottled or veined

It's often mottled or veined

Kambaba Jasper is a sedimentary stone comprised of microcrystalline Quartz interlaced with Stromatolites — ancient fossilized colonies of primeval microorganisms

occasionally mingled with rust-brown

after its type locality

African Petrified Wood Agate 10mm Round - 15-16 Inch Cube It's often mottled or veinedPetrified Wood Agate is formed from the petrifaction process of primeval trees over the course of many years. Petrification occurs when the wood is covered by sedimentary rock, as waters loosen and decompose the organic elements and replace them with silicate substances, while maintaining the wood's original structure. Preservation is enabled by a lack of oxygen.