Silver Black and White Diamond Bangle Bracelet (1/4 Cttw, I-J Color, I2-I3 Clarity) Enjoy the classic styling of this knot bangle Black diamonds may have been treated to improve their appearance or durability and may require special care. All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free. Imported Black diamonds are treated with high heat to set color Carat weight listed is the total for all stones.