Petoskey Stone (Hexagonaria percarinata Fossil) – Natural Unpolished Coral Stone 1–1.5”

Say & Play Geology!

Discover the beauty of Michigan’s state stone! Each Mini Petoskey Stone (Hexagonaria percarinata fossil) is a naturally occurring fossilized coral that lived over 350 million years ago. These stones are found along the shores of Lake Michigan and are treasured for their unique hexagon patterns.

• Size: 1–1.5 inches (randomly selected from our current batch)
• Quantity- one stone per order if you need more please change the quantity in the drop-down menu
• Condition: Unpolished – natural surface
• Fun Fact: When you get the stone wet, the fossil’s hexagon design becomes beautifully visible!
• Each piece is completely unique

These make wonderful keepsakes, fossil specimens for classrooms, gifts for rock collectors, or souvenirs from Northern Michigan.

Please note: Because these are natural fossils, each stone will vary in shape, pattern, and shading.

⚠️ Warning: Choking hazard – small parts. Not suitable for children under the age of 3.

Thank you for stopping by the Speech and Smile shop – your one stop mini object shop and more!