Metal: Alchemia Lead Free, Nickel Free, Hypoallergenic. Baked lacquer finish to protect metal from turning or tarnishing Obsidian: Approx. Small: 1" x .5". Large: 1 3/8" x 5/8". Length of Earring including Hook: Small: 1.75". Large: 2 1/8". When placing your order, please specify if you prefer a small or larger pair of earrings. Due to the one-of-a-kind nature of the stone, the shape and size will vary from the image shown. Handcrafted and artisan made All pieces are stamped or hallmarked for authenticity