African Petrified Wood Agate 5x8mm Large Hole Faceted Rondelle - 8 Inch R1242 Turritella Agate is a variety

Turritella Agate is a variety of Chalcedony

Lapis is highly regarded for its beautiful blue color flecked with gold inclusions of pyrite

its brilliant color comes from the presence of very small inclusions of Nickel compounds

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

and opalescence or lustrous sheen in opaque samples

African Petrified Wood Agate 5x8mm Large Hole Faceted Rondelle - 8 Inch R1242 Turritella Agate is a varietyPetrified 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.