Shelley's Vintage Originals. The central drop of this necklace is an antique faceted aurora borealis amber colored crystal bead (from a screw back earring). The entire drop measures 1 1/4" in length. The necklace is comprised of gold tone bar links inset with tiny open back crystals and delicate gold tone chain. The necklace has a ring clasp and measures 18" in length. An extension chain can be added per customer request.