14K White Gold Blue Topaz Stud Earrings (1.80 cttw ; 6 MM Cushion Cut) 30 Day Easy Returns. Jewelry Gift Box Included 14K White Gold Natural White Topaz stones are irradiated and heat treated to turn them into various shades of blue. This process is safe and permanent. The total carat weight of the 2 stones is 1.80 CT