Safety and environmental protection: Made from high quality resin, which is environmentally friendly, non-radioactive and non-toxic. Finished and polished so there are no sharp edges. Glow in the dark: approximately 100 pebbles of non-toxic glow resin per bag. These pebbles absorb enough sunlight or other artificial lights during the day and shine for 3-6 hours at night. The ideal decoration: the pebble lamp in the dark is the best decoration of the night. Shining and charming pebbles that meet in the dark will be even brighter, and special decoration will be enough to attract the attention of passers-by. Easy to use: 2 - 3 hours of exposure to sunlight or bright light. They then glow automatically in the dark. If you irradiate them longer under strong light, they will shine longer. Wide application: indoor and outdoor decoration of pebbles, ideal for decorating gardens, pathways, flower beds, decorative vases , aquariums, aquarium setups, water views, swimming pool setups, etc. Size: about 2 - 2.5 cm in diameter