Vintage Native American Sterling Silver Onyx, Turquoise, Coral, MOP Cobblestone, Inlay Necklace This necklace weighs 51.7 Grams The stone/design of this necklace is Onyx, Turquoise, Coral, MOP Cobblestone, Inlay Natural, industry standard treatment if any This necklace is 18 1/2 long The necklace is 2.7 mm wide Markings: unmarked, (Tested Sterling Silver) Condition: Estate, Great, moderate patina Extra Note: 1970 NOTE: Variations in color in the pictures are due to reflections. The color in person is a beautiful even silver. Thank you for viewing my item! Please follow me & favorite to be notified of upcoming sales.