Our Athena Rectangle Pendant Necklace is ideal for creating a stylish, layered look and is available in two luxurious materials - Mother of Shell and Onyx. MATERIAL: 18k PVD Gold plated, Stainless steel, Mother of Shell (white) or Onyx (black) LENGTH: 18" + 2" extender Available for back engraving +$20 email merakiandstar@gmail.com for a custom order Water resistant, tarnish resistant, hypoallergenic, & nickel/lead free.