ARC DROP EARRINGS $39 Delicate, elegant amethyst glass stones add a subtle glow to tips of graceful arches of gold tone brass earwire in face-flattering length. 2" drop in length. Lead & nickel safe. Selecting the initials of her beloved grandmother, Carla Greengrass christened her piece the ARC Drop Earrings. Carla adored her grandmother with all of her heart and boasts that she was strong and elegant, much like the ARC Drop earrings.