Expose Glow Moon Stones to sunlight or UV light, then turn out the lights & watch them glow! Lot's of fun for imaginative & sensory play, create lunar worlds & treasure boxes packed with glowing treasure! Decorate kids rooms with curious green glowing rocks that are a great compliment to glow stars; simply expose the lima-bean sized plastic pebbles to sunlight or UV blacklight for best effects, turn out the lights & see them glow! Glow in the dark moon stones Plastic glow pebbles Glow green Approximately 25 stones per pack Suitable for ages 3yrs + Find out more about how glow in the dark works to get the best from your glow moon stones.