Sterling Silver Black and White Diamond Twist Pendant Necklace (1/10 cttw), 18" Sterling silver necklace with pendant featuring white and black diamond-studded intertwined teardrops 18" rolo chain with lobster-claw clasp 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 Carat weight listed is the total for all stones.