The glowing stone lightens your beauty, it absorbs energy from sunlight or other light sources and can illuminate themselves in the dark. It is a good decoration for fish tank, flower bed, fairy garden, pathway, pond, or driveway. Features: Auto-illumination: These luminous stones absorb energy from sunlight or other light sources and can illuminate themselves in the dark. If the brightness is not enough, please use light again. Highest Quality Luminous Stone: These pebbles are made of the highest quality of resin and have a very high concentration per pebble. 100% Safe: These stones are non-toxic and non-radioactive. They are safe to use for any decoration or scene. Be careful! The pebbles however are small enough to be choking for small children. Vibrant Decoration: These glow stones are sure to add fun in the dark, they are a great decorative addition to a fish tank, flower bed, fairy garden, pathway, pond, or driveway. Warranty: If there are any problems, please contact our store