GLOW IN THE DARK PEBBLES: These glow pebbles absorb and storage energy from sunlight and other light sources,light up in dark night. Let the pea gravel absorb enough sunlight or artificial light at least for 4 hours, and pave them along the pathway. They will emit brilliant glow at night and transform your garden into a beautiful and dreamy landscape.! Please radiate them again if they are not bright enough. ENVIROMEN&DURABLE: the glow pebbles are made from Polystyrene (PS), non-toxic & tasteless, non-radioactive. It is safe to people, fish, birds and plants. The glow stones are perfect for aquarium decorations for fish tank, mason jar, pathway, yard garden decoration, aquarium decoration. PERFECT FOR DECORATIONS: Line a walkway, edge a flower bed or fill a planter with these pebble stones that will glow in the dark after being exposed to daylight.Ideal for waterscapes, landscape decoration, potted plants,edge a flower bed, lighting a pathway or driveway, gardens, crafts, aquariums,