Found this on the water at a beach in Florida. I don’t think it is charcoal. Shiny, black,almost sounds hollow. Any clue. It is hard and does not let go residue. This why I don’t think it is charcoal.
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Could it be slag, burned coal?Found this on the water at a beach in Florida. I don’t think it is charcoal. Shiny, black,almost sounds hollow. Any clue. It is hard and does not let go residue. This why I don’t think it is charcoal.