This is a 5mm, 30-inch necklace from HOORSENBUHS. There are some minor scratches, but in my opinion, it's in good condition. It's a rare model. I bought it used a few years ago from a reputable major recycle shop. There is no guarantee, but it is authentic. All hallmarks are present. If you are concerned, please refrain from considering this item. Also, I've included many photos, so please check them. There are no missing diamonds. There are minor scratches and blackening typical of silver, but I think it's clean because I've taken care of it. Thank you.