Petoskey Stone Polished Michigan Fossil Coral Freeform

This Petoskey Stone is a polished Michigan fossil coral specimen formed from prehistoric Hexagonaria colonial coral, with its repeating natural eye and honeycomb patterns visible across both sides.

The stone has a smooth glossy polish with strong brown, tan, cream, and smoky gray patterning, plus a few small natural pits and surface irregularities visible in the photos.

Its compact freeform shape and clear fossil pattern suit a Michigan stone collection, geological display, desk arrangement, or Great Lakes keepsake collection.

Details

• Item: Polished Petoskey Stone
• Item Type: Fossil coral stone specimen
• Era: Devonian period fossil material
• Materials: Fossilized Hexagonaria colonial coral
• Color: Brown, tan, cream, gray, and dark smoky brown
• Style: Polished natural geological specimen
• Dimensions: Approximately 2 inches by 1 3/4 inches. Product weight 2 ounces.
• Special Features: Polished surface, repeating fossil coral eye pattern, lighter honeycomb pattern on reverse, and distinctive freeform shape

Condition Grade: Very Good

Positives

• Graded Very Good: The stone is solid, smoothly polished, and well suited for handling or display, with only small natural surface irregularities visible.
• The darker face shows numerous well defined fossil coral centers surrounded by lighter skeletal walls.
• The reverse is lighter and shows a broad network of geometric coral boundaries across the polished surface.
• The polished finish brings out strong contrast between the cream colored fossil structure and darker brown centers.
• The unusual curved freeform shape gives the specimen an immediately recognizable silhouette without altering the natural fossil pattern.

Issues / Wear

• Several small natural pits and cavities are visible within the fossil surface.
• Fine polishing marks and light surface scratches are visible under direct light.
• Small dark mineral areas and natural color variation appear throughout the stone.

If you collect Petoskey stones, this polished freeform specimen shows fossil coral eyes on its darker face and a lighter honeycomb pattern on the reverse. If it's the one you've been looking for, it's ready to come home.