Alexandra: 5mm, 1.0ct Fancy Crown Set Simulated Amethyst Screw Back Earrings 925 Silver, 0811 Add a touch of royalty to your wardrobe with our Alexandra line, our new Simulated Amethyst stud screw-back earrings sat into a fancy, multi-point crown setting. Hard-to-find threaded posts with screw-on backs! Made with solid 925 Sterling Silver Each earring features 5mm, 0.5ct Simulated Amethyst, for a total of 1.0ct for the set