.925 Sterling Silver White CZ Halo 9.30mm Stud Earrings Screw Backs Ladies Sterling Silver CZ Stud Earrings. Item in image is smaller than it appears. It is enlarged to show details. Picture on ear will give a very good idea of true size. .925 Sterling Silver, Screw Backs Round Cut with Shared Prong Setting White Cubic Zorconia, Approximately 2.5 grams Comes with Gift Box, 100% satisfaction guaranteed. 30 Day Returns.