This is a 5mm, 30-inch HOORSENBUHS necklace. It has some minor scratches, but in my opinion, it's in good condition. It's a rare model. The length is 42.5 cm from end to end when worn as a necklace. When laid straight, it's about 77 cm long. I bought it used a few years ago from a reputable major recycle shop. There is no guarantee, but it is authentic. All the hallmarks are present. If you are concerned, please refrain from considering it. Also, I've included many pictures, so please check them. There are no missing diamonds. There are minor scratches and the blackening typical of silver, but I think it's in relatively good condition because I've taken care of it. Thank you.