Found lots of Petoskey stones and still search.Five tips for finding and polishing Petoskey stones, fossilized ancient coral found on the beaches in the shallows of Lake Michigan along the Northern Michigan coast.
Petoskey Stones, the state stone of Michigan, are fossilized coral resulting from glaciation and are often polished to reveal the beautiful pattern of the 6 sided coral colonies. Here is a Petoskey stone & Charlevoix stone.
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
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.