Found these at the beach

[signal]

I am relatively new to detecting the beach. I find these pieces all the time, like broken pieces of something. They are pretty corroded. I think the one on top may be a corroded coin, perhaps a dime, but maybe something cooler. I hit it with a good bit of CLR but it wasn't able to do much to it.

Those of you who hit beaches a lot, what is this stuff?

 

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[boris]

They [jewelers] tell me obsidian was used as ballast in very old sloops' me thinking 925 not glass?

 

[BeachComber7]

I find it all the time on the beaches too here in Florida. They can fool you because some are shaped just like a cob but the reddish color is the giveaway. Cobs being silver are blackened no rust red at all and gold well, it hardly changes. They seem to be just bits and pieces of iron that finds its way to the beaches.

 

[Moe (fl)]

Check if they are magnetic (iron). I find them too. Mostly are just pieces of iron.

The piece on top looks a little different. Put it in tumbler. Also see if magnetic.

Moe

 

[YankeeDownSouthAdv.]

agree with the majority on these. few times i hit the beaches here i found quite a bit myself.

 

[BuckleBoy]

The one on top may very well be a silver coin.