The Petoskey Stone

Cygnus is headquartered in Petoskey, Michigan which is about 30 miles South of the Mackinaw Bridge. Petoskey is famous for several things but I feel the most unique thing is the Petoskey Stone. I never realized that Michigan had a state stone and here it is.

A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized coral, Hexagonaria percarinata. The stones were formed as a result of glaciation, in which sheets of ice plucked stones from the bedrock, grinding off their rough edges and depositing them in the northwestern portion of Michigan's lower peninsula. Read more on Wikipedia