1/2 cttw to 2 cttw Black Diamond Stud Earrings in 14K Gold 30 Day Easy Returns. Jewelry Gift Box Included 14K Yellow Gold Round Black Diamonds Set in 4 Prong Basket Setting Black diamonds have been heat treated to improve their appearance or durability. The total carat weight of the 2 diamonds is 0.50 CT You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!