Cz Stud Earrings - Bezel Set in Sterling Silver - Cubic Zirconia Earrings Description: EFYTAL Cubic Zirconium Bezel Set Stud Earrings. Materials: Sterling Silver, Cubic Zirconium. Efy Tal Jewelry (manufacturer) stands by the quality of our metals. Dimensions: 4.5mm diameter cubic zirconium, 6mm diameter including the setting