CVC Stones founder Charles de Viel Castel told us he wants everyone who owns one of his one-of-a-kind pieces to say, this is unique, this is mine. The 18-karat gold chain on this handmade 'Moonbeam' necklace is strung with a translucent stone that's set with 0.31-carats of glimmering diamonds. Try it layered with the Cozumel and Agapa styles from the collection.