These gold hoop earrings are made with 18 karat gold plating. This gold plating protects against wear and tear, tarnishing, and light contact with substances such as water. Closures: * Standard closures are hypoallergenic and nickel free. (For pierced ears) * Clip on closures are made of acrylic/plastic which makes for an invisible look. They are also hypoallergenic and nickel free. (For nonpierced ears) How to wear clip ons: Hold the front of earring in one hand while pulling the clear closure Paperclip Shaped Metal Earrings As Gift, Modern Chain Link Earrings For Gift, Modern Chain Link Earrings As Gift, Gold Paperclip Hoop Earrings As Gift, Modern Chain Link Earrings For Everyday Wear, Trendy Paperclip-shaped Earrings As Gift, Trendy Paperclip Earrings As Gift, Trendy Paperclip Earrings For Gift, Modern Everyday Link Earrings