14K Gold Amethyst Stud Earrings (1.80 cttw ; 6 MM Round Cut) 30 Day Easy Returns. Jewelry Gift Box Included 14K White Gold The Amethyst stones are Heat treated. The total carat weight of the 2 stones is 1.80 CT All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free.