Gift from the Mall

Don't know what it is. I'm sure it's jewelry of some kind. I was standing in the food court at the mall this weekend and this came sliding up to my feet. I looked around but no one was looking for it. I didn't even know what it was ( I thought it was candy at first) but it caught my eye so I picked it up. It's clad in silver but I have no idea what is in the center. It's about the size of a dime. In any event I thought it was cool so here it is.