Official NCAA Licensed Product. Charming Collectables items are assembled by a team of working mothers in Broken Arrow, Oklahoma. All of our jewelry is hypoallergenic, and lead, nickel, and cadmium free. Silver jewelry is sterling plated, then coated with an anti-tarnish formula. Earrings are made with stainless steel fish hook wires. Most necklaces measure 18 inches, and bracelets measure 7.5 inches. Bangles and stretch bracelets flex to fit most sizes.