Presenting our signature brand: BT☆Sterling® and the Beach Treasures Seaglass and Clamshell Necklace -- a dramatic piece of wearable, natural art! Made from findings discovered along the Outer Banks beaches from Ocracoke to Carova and then encased in brilliant 9.25 sterling silver. The necklace adjusts from 20 to 21 inches long with the center shell measuring 2 inches long.