CVC Stones' necklace is part of the label's new 'Alchemist' collection. Designed to resemble the signature stones Charles de Viel Castel hand-picked from beaches around the world, this one-of-a-kind style is strung with an 18-karat gold pendant that's inlaid with 0.06-carats of round-cut diamonds. The long length makes it perfect for layering with shorter styles.