Sterling Silver Diamond Key and Heart Pendant Necklace (1/4 cttw, I-J Color, I3 Clarity) Sterling silver necklace featuring dangling heart and key pendants embellished with sparkling round diamonds 18" cable chain with spring-ring clasp All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free. Imported Carat weight listed is the total for all stones.