Since 1861, Gump's has been a destination for jewelry that is distinctive, extraordinary and timeless. From developing the design to overseeing the production, our expert in-house team ensures each piece in our signature collection is created to our exacting standards. The result is a statement of pure elegance. Black nephrite jade, 5mm. 14-karat yellow gold. 36"L continuous. Black Jade & Gold Station Rope Necklace