Sterling Silver and Assorted Colors Silk Cord Twisted Rope 18" + 2" Extension Necklace. Weight 6.3g (approximate) The thickness of the rope is 4mm approximate. Product is shipped in a nice presentation box. You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!