Can you ever get copper out of dead coral decorations?


I was planning on bidding on some used dead coral decorations, and since I don't know if people are that honest, can you ever get copper out of it? I have inverts and wouldn't want to introduce anything that had copper in it. Is there a way to get the copper out? I don't know for sure if copper has been used in these pieces, but I will assume the worst....better safe than sorry.