Details Statement locket necklace featuring a Natural Aventurine center stone Necklace is 16” x 1.2" + 2“ Rolo Chain extender chain Necklace weighs 7.60 grams Part of the Night Swim Collection Materials Made from plated brass and Natural Aventurine stone Plating is waterproof and tarnish free 14K plated brass and Rhodium plated silver with E-Coating Plated high polish 14K Gold or Rhodium for maximum shine Necklace is100% nickel-free and cadmium-free