Where is Petoskey Stone found?
Fossilized Hexagonaria percarinata coral (calcite)
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Open the appPetoskey Stone occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Petoskey Stone
Lake Michigan Shorelines
Especially prevalent along the beaches of Lake Michigan in the northern Lower Peninsula of Michigan, particularly near Petoskey, Charlevoix, and Traverse City.
Lake Huron Shorelines
Can also be found along the shores of Lake Huron, though generally less common than on Lake Michigan.
Gravel Pits and Road Cuts
Occurs in glacial outwash and till deposits throughout the northern Lower Peninsula of Michigan.
Collecting tips
- Search after storms. Storms and strong wave action can churn up the lake bottom and expose new stones on the beaches.
- Look in shallow water. The patterns are often more visible when the stone is wet, making shallow water an ideal place to spot them.
- Visit public beaches. Many public beaches in northern Michigan are excellent places to search, but be aware of local regulations regarding collection limits.
- Bring a spray bottle. If searching on dry land, a spray bottle of water can help reveal the characteristic patterns.
Quick Check
- Color:
- Gray to tan with darker hexagonal patterns.
- Luster:
- Dull (unpolished), Vitreous (polished).
- Streak:
- White (due to calcite composition).
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