18k Yellow Gold over Sterling Silver Green Jade Peridot and Diamond Drop Earrings (1/10cttw, I-J Color, I2-I3 Clarity) Jade is commonly treated and impregnated with polymers to enhance its color and improve its stability. All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free. Gemstones may have been treated to improve their appearance or durability and may require special care. Imported