James and Ida Goulette

Historical marker location:

300 Kent Street, Iron Mountain, Michigan

( Marker can be reached from Kent Street just west of Fairbanks Street/Carpenter Avenue, on the left when traveling east.)

Marker installed: 1988

Michigan is the only state to have two designated "state stones": the Petoskey Stone, which is the state stone of Michigan, and the Isle Royale Greenstone, which is the state gemstone of Michigan. The Petoskey Stone is a fossilized coral that is found primarily in the northern Lower Peninsula, while the Isle Royale Greenstone is a rare mineral found only on Isle Royale in Lake Superior.