I bought this from an outside seller. I'm selling it because I bought it but haven't used it. To prevent identification, I've partially edited the certificate. There is no adjuster. Harry Winston also doesn't have adjusters, but the absence of one makes the back of the necklace look beautiful. - Decoration: Diamonds - Certificate: Certificate included Length without adjuster: 42cm Thank you for looking. If you'd like to negotiate the price, please make an offer. Some people ask for a price reduction, then ask for a further reduction from that reduced price. Please refrain from doing this. If you're interested in September, I can offer a lower price, so please consider it.