Petoskey Stones are the fossilized remains of a coral that grew in Michigan 350 million years ago. Petoskey means "rays of rising sun" in Indian. Oh gosh I saw so many of these when I lived Up North Michigan
A Petoskey stone .is a rock and a fossil, often pebble-shaped, that is composed of a fossilized coral that lived 350 million years ago. The rocks rounded in the surf along the shores of Lake Michigan near Petoskey, Michigan.
Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized coral, Hexagonaria percarinata. They are fragments of a coral reef that was originally deposited during the Devonian period, about 350 million years ago.