What is the state rock of Texas?

The state rock of Texas is the petrified wood. Texas is home to significant deposits of petrified wood, particularly in areas like the Big Bend region and the Panhandle. Petrified wood is fossilized wood that has turned into stone over millions of years due to mineralization. It is highly valued for its unique colors and intricate patterns and can be found in many parts of Texas. Petrified wood was designated as the state rock in 1965, reflecting the state’s rich geological history and natural resources.