Sterling Silver Star Key Diamond Pendant Necklace (0.01 cttw, I-J Color, I2-I3 Clarity), 18" Gemstones may have been treated to improve their appearance or durability and may require special care Gemstones 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.