The chain measures approx. 26" to the pendant; the top of the pendant to the bottom of the drop is approx. 3". The design is filigree. I'm pretty sure the cameo stone is glass, and so I expect the drop is glass as well, although I suppose it's possible that both of those are a manmade material. I don't know what it is that's inside - I was expecting it to be a glacè, but it's not. It looks like it should be Avon, but Avon, as far as I know, is always marked, and this has no markings on it anywhere. Feel free to ask questions. Sorry, no shipping Saturdays. Thanks for looking!