Features: Glowing small stone: They can't-glow by themself, must absorb enough sunlight during the day to glow-up to 3-4 hours at night or any other dark environment. The light is brighter in the first hour. As the light energy is gradually released, the luminous effect will gradually weaken until it becomes dark. After that, the light absorption operation needs to be repeated. Luminous stone luminescence principle: The luminous principle of our luminous stone is the process of absorbing light energy, storing light energy and releasing light energy, which can be reused repeatedly.The more dark the environment, the better the effect Easy to Use: Leave the-pebbles in sunlight or artificial light for an extended period of time and then place them on walkways, flower beds, etc. At night, your garden will look fantastic with these luminous stone. When used for the first time, it is recommended to expose the luminous stone to sunlight or light for approximately 2-4 hours to absorb and store energy. Application: It is suitable for DIY road landscaping of garden villas, fish tank and aquarium decoration, flower trays, balconies,swimming pool, wedding decoration, luminous characters production, counter decoration, etc. Quality Material: It is made of resin, which is odour-less and contains no radioactive substances Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: Resin Color: mixed-color Quantity: 100/200/300pcs each bag Package List: 1 Set Glow-in-The-Dark Garden Stone Rock