Beauniq 10k Yellow, White or Rose Gold 0.90mm Delicate Rope Chain Necklace Unsure what length chain to buy? 18 inches is the standard length and will look great on most people PLEASE NOTE: The 12in to 15in lengths will be choker-length on an average-sized woman Solid 10k gold 0.90mm thick All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free.