Metal: Alchemia Lead Free, Nickel Free, Hypoallergenic Baked lacquer finish to protect metal from turning or tarnishing Stone: Fossil Shark Teeth Due to the one-of-a-kind nature of the teeth, the color and shape pattern may vary slightly from the image shown. Shark Tooth: 5/8" x 5/8". Stainless Steel Post Handcrafted and artisan made All pieces are stamped or hallmarked for authenticity