1837 LOCK necklace, genuine Silver, 16" Long.--A Tiffany necklace is a personal expression that is all your own. A signature piece will always proclaim your personal style. The Tiffany necklaces we offer you are top grade quality and crafted by genuine silver. Each item will come with original Tiffany & Co gift packs including the blue box, pouch, silver care card and gift bag.