Carolyn Pollack Mixed Metal White Shell Statement Necklace Genuine White Shell, Brass, and .925 Sterling Silver Adjustable 16 to 16-3/4" long x 1-1/2" wide See Ruler View for accurate sizing. Silver may tarnish over time. Handcrafted in America with lifetime warranty on all jewelry Sterling silver, brass and white shell come together in a popular trio in this detailed necklace!