IGI Certified 0.20 CTTW Round Diamond 4-Prong Stud Earrings in White Gold with Screw Backs (E-F, I1) Made in USA These IGI-certified earrings have been assessed and authenticated by the International Gemological Institute's expert gemologists. This product comes with a Luxurious Cherrywood Gift Box. All our diamond suppliers certify that to their best knowledge, all diamonds are conflict free and 100% in compliance with the Kimberly Code of Conduct. All our gold items are responsibly sourced and the majority is made from environmentally processed recycled gold.