African Petrified Wood Agate 5x8mm Large Hole Faceted Rondelle - 8 Inch R1242 often with a mottled appearance

often with a mottled appearance

Turritella Agate is a variety of Chalcedony

A particularly soft stone

and the green color is caused by a reaction in the stone when the chrome is introduced to water

with a Mohs Hardness of 8

African Petrified Wood Agate 5x8mm Large Hole Faceted Rondelle - 8 Inch R1242 often with a mottled appearancePetrified 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.