Kindly note, the jewelry I have is from an estate sale find through a consignment client. Many costume and vintage pieces have been stored for sometime and are not cleaned. I leave this up to the buyer. May not be in perfect condition, unless otherwise noted in the listing. I do not know any details on the materials, I don’t test it, I don’t clean it, I just take pics and list. That being said, have fun with some of these great little finds that still have plenty of life left! What you see in the photos and video is what you get. All sales are final. Thanks for shopping!