These 12 mm hoops combine environmental copper, glossy black enamel, and white synthetic CZ for a clean, retail-ready finish. The 18K gold plated surface is hypoallergenic, nickel-free, cadmium-free and water-resistant for reliable batch consistency. These earrings are Xuping Jewelry, ideal for wholesale earrings buyers seeking retail-ready designs, long-lasting finish, and steady-demand inventory.