African Petrified Wood Agate 5x8mm Large Hole Faceted Rondelle - 8 Inch R1242 It has been called the

It has been called the Earth Rainbow due to its concentric bands displaying virtually every color the earth can produce

with a Mohs Hardness of 8

and opalescence or lustrous sheen in opaque samples

often with a mottled appearance

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

African Petrified Wood Agate 5x8mm Large Hole Faceted Rondelle - 8 Inch R1242 It has been called thePetrified 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.