Goldbug Collection’s Lifesaver Ring Charm Holder hinges open and snaps closed to hold your charms. 18K gold-plated brass Diameter: 20 mm Closed Jump Ring: 10 mm Care: To keep your Goldbug pieces shining their brightest, please do not shower, swim, or sleep while wearing them, and keep them away from sunscreens, lotions, and perfumes. To clean your pieces, rinse with warm water and gentle soap. Like our bug friends, sadly, costume jewelry doesn't live forever! Charms and chains are sold separately.