Mason & Madison Co. Has Been Featured On. Item Details:. • Gold Herringbone Chain Necklace. • Gold Link Chain Necklace. • Premium-grade PVD 18K Gold-plating for a durable and scratch-resistant accessory that withstands all the elements of an active lifestyle without sacrificing a luxurious look.. • Chain length: 16 in, Extension: 2 in. • Chain length: 17 in, Extension: 2 in. • Golden Benefits: the Energy of CONFIDENCE + SELF-WORTH + COURAGE. • Dispatched from New York, USA