Denny: 4mm 0.5ct Brilliant Cut Ice on Fire CZ Rhodium Finish Screw Back Stud Earrings Silver, 0987 Hard-to-find threaded posts with screw-on backs! Features the beautiful and sparkling created Russian Ice on Fire CZ! Made with solid 925 Sterling Silver with a Black Rhodium Finish. Professionally hand-set in our own US studio.