2.16 State stone. Sec. 1. The Petoskey stone is hereby adopted as the official stone of the state of Michigan. History: 1965, Act 89, Eff. Mar. 31, 1966
Michigan Legal Code
2.16 State stone. Sec. 1. The Petoskey stone is hereby adopted as the official stone of the state of Michigan. History: 1965, Act 89, Eff. Mar. 31, 1966