Rough Petoskey Stones

PHOTOS ARE REPRESENTATIVE ONLY – Each Stone is Unique!

(Available in multiple size variations—choose the one that fits your project!)

Unleash Your Creativity

Rough Petoskey stones are perfect for tumbling, cutting, or polishing at your own pace. Whether you’re a beginner or a seasoned rockhound, these natural fossils offer endless possibilities for hands-on exploration and creativity.

*Note - unless otherwise requested, our "by the pound" Petoskey stones typically fall in the 1" to 2" size range.

Experience the Fun of Vinegar Etching

Transform your Petoskey stone at home with a simple soak in 5% white distilled vinegar. Watch as its unique honeycomb patterns emerge overnight—an easy and fascinating way to bring these ancient fossils to life. (Note: Results may vary and are not guaranteed.)

A Piece of Michigan’s Ancient Past

Each stone is a fossilized coral from over 350 million years ago, formed in the Devonian Period. Found along Michigan’s Great Lakes, these natural treasures connect you to a rich geological history.

Bring Ancient History to Life

Whether you’re crafting, experimenting, or simply enjoying the process, rough Petoskey stones make every project meaningful and fun.

*Available by the stone or by the lb!

*contact us for larger stones or special requests