Check the listing for details. petrified wood. Condition: Used. Listed at 120.00 USD. Petrified wood is a unique collectible that results from the process of wood turning into stone over millions of years. This process, known as wood turning into stone or wood turning into rock, involves the gradual replacement of organic material with minerals, creating a durable and fossilized piece. Petrified wood can be found in various locations around the world and is a popular item for collectors of rocks, fossils, and minerals. Its distinctive patterns and colors make it a fascinating piece for display and study.