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!