Austin: 8mm 4.0ct Russian Ice on Fire CZ Crown Set Screw Back Earrings 925 Sterling Silver, 3247A Add a touch of royalty to your wardrobe with our Austin line of stud earrings featuring fancy, multi-point crown settings. Hard-to-find threaded posts with screw-on backs! Made with solid 925 Sterling Silver with a protective White Rhodium Finish. Each earring features an 8mm, 2.0ct Russian Ice on Fire CZ, for a total of 4.0ct for the set