Petoskey Stone
A rock often used for lapidary and fashioned into jewellery items, it is composed of a fossil coral, the devonian-age (350 million year old) Hexagonaria percarinata. It is found in the northern part of Michigan.
In 1965 it was named the State Stone of Michigan.
In 1965 it was named the State Stone of Michigan.
| Photos of natural/un-cut material from mindat.org | ||||||||||||||||||||||||
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| Mineral information: | Petoskey Stone information at mindat.org | |||||||||||||||||||||||
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