Presenting our signature brand: BT☆Sterling® and the Beach Treasures Oyster Shell Necklace -- a unique and wearable piece of nature's art! Made from shells discovered along the Outer Banks and then encased in brilliant 9.25 sterling silver. The necklace adjusts from 19 to 20 and 1/2 inches long with the center shell measuring 2 inches tall and 1.5 inches wide.