These gorgeous stud earrings are made with genuine Swarovski Crystal Elements in Emerald Crystal color with surgical steel, hypoallergenic posts. Studs measure 6mm in diameter and 1 CTW each for a total carat weight of 2 CTW. Made here in the U.S.A and Emerald (Deep Green Crystal) is the birth stone color for May! Now available in your choice of gold plating or rhodium plating.