Metal: Alchemia Lead Free, Nickel Free, Hypoallergenic. Baked lacquer finish to protect metal from turning or tarnishing Earrings Available in following inside diameters: 30mm, 45mm & 60mm. Stainless Steel Post. Hammered Finish. 3mm Alchemia Tube for Hoop. Handcrafted and artisan made All pieces are stamped or hallmarked for authenticity