Mason & Madison Co. Has Been Featured On. Add a touch of luxury to your look with this Gold & Diamond Chunky Chain Necklace. It features a classic curb chain design to wear on its own or layered with other necklaces.. Item Details:. • Features: Gold + Diamond. • Lab-grown Diamonds, 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 length: 2 in. • Diamond Brilliant Benefits: the Energy of POISE + PURITY + VISION. • Golden Benefits: the Energy of CONFIDENCE + SELF-WORTH + COURAGE. • Dispatched from New York, USA