2" Polished Petoskey Stone (Fossil Coral) - Michigan

This is a beautiful piece of fossil coral (Hexagonaria percarinata) from Michigan. It has been polished to a glossy finish on one side, while the rest of the piece has only been polished to a matte finish. The polish really reveals the detailed structures of the coral well.

About Petoskey Stones

Known locally as Petoskey stones, this fossil coral is commonly found along the shores of Lake Michigan and Lake Huron, as well as in rock quarries stretching from Alpena to Traverse City, Michigan. The material comes from Hexagonaria percarinata, a species of rugose coral that lived during the Middle Devonian, roughly 350 million years ago. Petoskey stones are officially designated as the state stone of Michigan.
SOLD
DETAILS
SPECIES
Hexagonaria percarinata
LOCATION
Michigan
FORMATION
Gravel Point Formation
SIZE
2.0" wide
CATEGORY
SUB CATEGORY
ITEM
#260116
GUARANTEE
We guarantee the authenticity of all of our specimens.