One Roberto Coin 18 karat rose gold circle pendant featuring round brilliant cut black and white diamonds totaling .72 carat, G-H color, SI clarity hanging from a chain measuring18 inches. Roberto Coin signs his pieces with a small ruby casted inside the jewel, in direct contact with the skin of who wears it. This magical signature, surrounded by an antique halo of legend, represents the message of good wishes that Roberto Coin dedicates to his passionate clientele.