Ace your look with this day-to-night beauty. The eternally elegant Serena Tennis Necklace is made with 18k gold plated recycled sterling silver, studded with rich Green Onyx and Cultured White Sapphire. 18k gold plated 100% recycled sterling silver 2mm and 3 mm brilliant cut Green onyx birthstone 1.5mm and 2mm brilliant cut Cultured White Sapphire Necklace is 16" (40.5cm)