- Add a pop of color to your outfit with this beautiful Betsey Johnson necklace. The necklace features multicolored disks on an 18" gold chain with a lobster closure. The pendant/locket type is a charm, and the style is a chain. The necklace is made of copper with an alloy that contains no lead or nickel, making it safe to wear. The main stone is a round glass, eye-clean, with a width, length, and depth of 0.5mm, and with an unknown creation and treatment. The necklace is perfect for any occasion and will make a great addition to your jewelry collection.