yep, so i would post a request in the authentication thread as sadie is there THE TIFFANY expert! then when u get it if u really want to - take it to tiffany for cleaning if it needs it. i buy a lot of preloved staff and if sadie approves it - i am sure its real once i get it. i did take some to tiffany to extend chain or other service, they would only take it if its one of "theirs", so if u do it as soon as u get it - u would 300% know its real. but things from approved online sites like yoogiscloset i dont even bother authenticating here as i know they only sell authentic stuff.