The Petoskey Stone is the State Stone of Michigan. But it is not a Petoskey until it is polished. In it’s natural form it is actually a fossilized colonial coral called hexagonaria. There are several types of the Hex. Many are found along the shores of Lake Michigan and Lake Huron. They are found tumbled by the water and rubbed smooth by the action of the waves and sand. Once removed from the water they become a chalky white and lose the detail. They must be polished or wet with water to again show the magnificent detail.
Fossil of the Month of May Hexagonaria, The Petoskey Stone
