PlatinumPlated Sterling Silver RoundCut Cubic Zirconia Stud Earrings A versatile classic, these solitaire earrings will add a touch of dazzle to any outfit. Crafted in platinum-plated sterling silver, they showcase 5mm rounds of sparkling clear cubic zirconia. The stones are cradled in four-prong settings, and the earrings are featured on posts with friction backs. The platinum plating gives these earrings a luxe finish and also makes them tarnish-proof and hypoallergenic. P..