This herkimer diamond quartz necklace features a stunning gemstone in an unusual shape to make a delicate necklace that everyone will notice. The necklace has extender chain so it can be worn at varying lengths from 15.5″-16.5″. While the necklace is only photographed in gold but is also available in sterling silver. Herkimer diamond quartz is a naturally clear stone with darker striations throughout, the stones you receive may vary slightly in shape and coloring.