Metal: Alchemia Lead Free, Nickel Free, Hypoallergenic Baked lacquer finish to protect metal from turning or tarnishing Obsidian: Approx. 20mm Length of Pendant including Bale: Approx. 1 3/8" Due to the one-of-a-kind nature of the stone, the color and shape pattern may vary slightly from the image shown All pieces are stamped or hallmarked for authenticity Handcrafted and artisan made