10k White Gold Black and White Swan Couple Diamond Pendant Necklace (.12 cttw), 18" Polished white gold necklace with pendant featuring pair of playful animals encrusted with black and white round-cut diamonds All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free. Black diamonds may have been treated to improve their appearance or durability. Imported Carat weight listed is the total for all stones.