0.925 Sterling Silver Plated Classic Stud Earrings With Amethyst 8ct Radiant Cut And Trillion Cut Cubic Zirconia In A Prong Setting In Silvertone. A single clear trillion cut stone accompanies an amethyst radiant cut center stone in these elegant 8ct CZ simple stud earrings. A contemporary twist on a classic pair. Our genuine rhodium finish is achieved using an electroplating process that coats the item with heavy layers of rhodium a close cousin to platinum. This gives our jewelry a platinum luster.