Pretty vintage filigree pendant and chain

This is a Vintage piece. To me the chain looks goldtone but to be honest I can't figure out what this piece is. The last picture is taken with the flash. The filigree pendant is gorgeous with intricate and delicate designs. There is something inside the pendant but it does not open. I don't know if they are tiny beads because I can't feel them and are difficult to see. The chain is 8.5 inches long. The pendant is 1.25 inches long. There are no markings except on the tag it says 925. There is some tarnish but I will leave that up to the buyer to clean. It has a lobster clasp that works as it should.