14K Gold Blue Sapphire Stud Earrings (1 cttw) 30 Day Easy Returns. Jewelry Gift Box Included 14K White Gold Natural Sapphire stones are heat treated to remove color zoning, and improve color and vibrancy. No radiation, chemicals or health risks are involved in this process. This process is permanent. The total carat weight of the 2 stones is 1.00 CT All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free.