This necklace with pendant is an estate find. There are no markings of identification. I did not do any acid testing on the pendant. The only thing I did do was run a regular (fridge) magnet across it and while the chain had attraction the pendant did not.
It's a silver tone metal... double stranded chain (except for back closure) with a hexagon shaped pendant. The pendant has rhinestones. The total length of necklace is approx 19". Lobster claw closure.