Petoskey stones

[Murray656]

Figured I would put these up here not finding any others on here I've got a huge bag of them never get tired of finding them just don't have time to polish them all these two are in my fish tank so they look a little dirty

 

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[FindSomeGold]

Very cool! Here are some I found on a trip to Mackinac Island last year.

 

[centfladigger]

that is some cool stuff, I have cabbed a few pieces, very soft like a 4 on the Mohs scale...you can polish those there just rubbing the sides with another rock or sandpaper

 

[Murray656]

Yeah I polish with sandpaper just takes so long I have much larger ones just don't have the time

 

[GrizLeeBear]

I saw some of these on display in Texas. Do they only come from Michigan? I wander what causes them? They are something to see when polished.

 

[Murray656]

Well I know you can only find them in and around petoskey Michigan and some spots in the upper and all they are is 350 million old fossilized coral

 

[Murray656]

They were formed by glaciers might have some for sale or trade if anyone is interested