Polished Petoskey stones, identified as fossilized coral specimens. Both stones display the characteristic hexagonal coral pattern of Petoskey stone, a fossilized rugose coral typically found in Michigan. Surfaces are smooth and polished, clearly revealing the distinctive cellular patterns. Stones vary in size, as shown in the provided images.
No major chips or cracks are visible; the surfaces appear well finished overall. Suitable for display, educational use, or collection. See photos for measurements, if taken.