A true museum-quality piece for serious fossil collectors and Great Lakes rockhounds.

This extraordinary Full Head Petoskey Stone is a rare find. Unlike typical water tumbled Petoskey stones, this specimen retains its original, complete coral head shape—a stunning relic of Michigan's ancient tropical ocean floor.

The top dome has been meticulously hand-polished to a mirror-like finish, bringing out incredible contrast, crisp cell walls, and distinct starburst radial septa. The underside showcases the raw, unpolished natural matrix, providing an authentic look into how this 350-million-year-old fossil formed.

Specifications:

Origin: Northern Michigan, USA

Fossil Type: Rugose Coral (Hexagonaria percarinata)

Weight: 1 lb, 10.1oz

Finish: Professional high-gloss polish on top. Natural/raw on bottom. 

What’s Included: