Light up your jewelry collection with this brand new firefly dangle charm. Designed with a rounded glow-in-the-dark glass body, this little firefly appears white in daylight and glows at night. Simply expose it to sunlight or UV light to charge. Material: 925 Sterling Silver (stamped) Compatibility: Standard 4.5mm core fits most European-style charm bracelets and necklaces, including brands like Pandora and Chamilia. This is a perfect meaningful gift for someone who "lights up your life" or as a reminder of your own inner light.