Petoskey isn't the only stone on the beach, and the Lake Michigan shoreline from South Haven to St. Joseph offers wonderful stones for rock collectors. Here are the names of some of those commonly ...

The Petoskey stone was named Michigan's state stone in 1965. High lake levels along the Great Lakes this summer mean finding them may be easier in coming years.

Michigan has long been a favorite place for rock hunters because of its geologic history, which spans 3.5 billion years.

Sodalite is a deep blue to blue-violet mineral best known for its use in jewelry ... or “sodium stone," according to Rock ... entirely within US. 10 things to know about Lake Michigan How deep ...

A Michigan rock hunter pulled a 93-pound fossilized coral stone out of Lake Michigan on Tuesday. When Tim O'Brien of Copemish, Mich., spotted the massive Petoskey stone a week ago, ...