Sterling Silver Diamond Heart Pendant Necklace (1/2 cttw), 18" 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. You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!