Cubic Zirconia Stud Earrings Simulated Diamond Stud Earrings in 925 Sterling Silver A simple look has never offered so much shimmer and shine. These earrings six-prong studs are set with dazzling 5-mm round-cut cubic zirconia. A brilliant look every day of the week, these earrings secure with friction backs. MADE IN USA! 14k Simulated Diamond Stud Earrings in 925 Sterling Silver