Metal: Alchemia Lead Free, Nickel Free, Hypoallergenic Baked lacquer finish to protect metal from turning or tarnishing Luminite: 25mm Luminite has an opalescent, multi-color sheen Face of ring measures 1"wide Adjustable 5mm Ring Shank Fits Ring Sizes: 5-10 Handcrafted and artisan made All pieces are stamped or hallmarked for authenticity