Material: stainless steel, it is lead free and nickel free. Stainless Steel is hypo allergenic, it doesn??t rust, change color or tarnish. Size: the charm engraved with ??I am burdened with glorious purpose? is 0.79inch in diameter, the Loki helmet charm is approximately 0.47inch. From movie Marvel’s The Avengers, ??I am Loki, of Asgard. and I am burdened with glorious purpose?. A simple but happy bracelet to show off your devotion to the lost prince of Asgard, also make a wonderful jewelry for any huge Tom Hiddleston fans.. aka Loki. Will arrive at a velvet bag, make a perfect birthday gift, Halloween gift, Valentine??s Day gift, graduation day, etc..