Thank you for viewing. This item was found while organizing my parents' house. It's quite old, so the clasp has rust and damage, but I was told it was expensive when purchased. There is no certificate of authenticity, but a pawn shop confirmed it is genuine pearl. The pearl size is approximately 7mm, measured with a ruler, and the necklace length is approximately 41cm (approximate measurements). Please note that returns and refunds are not accepted to prevent substitution. Please check the photos carefully and only purchase if you understand and accept the condition. *Case not included