Metal: Alchemia Lead Free, Nickel Free, Hypoallergenic Baked lacquer finish to protect metal from turning or tarnishing Turquoise: 12mm x 16mm. Cuff Width: 1 5/8". Adjustable Cuff. Fits Wrist Sizes: 5-8". Due to the one-of-a-kind nature of the stone, the color and shape pattern may vary slightly from the image shown. Handcrafted and Artisan Made All pieces are stamped or hallmarked for authenticity