All of the Sterling Silver slider pendants are made with 100% solid .925 sterling silver. They are not silver-filled or silver-plated. Some pendants have been artificially oxidized for an antiqued look but most of them are bright silver. If you would like to have a pendant oxidized, let me know. I will be happy to oxidize it for you if you would prefer an "antiqued" look. Please note that oxidized silver jewelry should not be cleaned in any type of commercial silver cleaning solution as this will remove the oxidation. If you would like to clean the piece, you should only use a polishing cloth to rub off any excess tarnish you wish to remove and give it a nice shine.