Ohio State University Charm with Slide On Connector Bead is Compatible with Pandora Style Bracelets The slide on bead connected to the charm is stainless steel with red and clear crystals. It will not rust or tarnish Charm is a semi-cloisonné' design with a hard enamel finish Charm is a base metal, lead and nickel free ~ 5/8" x 5/8" Makes a great gift