Glow in the dark rocks are made of high-quality resin that is non-toxic, tasteless and non-radioactive. They are safe for people, fish, plants and the environment. Each stone is tumbled and polished to a smooth, round finish, minimizing sharp edges and making them safe for homes with kids and pets. They can be used in any decoration or scene without risk. How it works: The rocks absorb and store light from ambient sources and then glow in darkness. They provide several hours of bright illumination, gradually dim, and the glow cycle can repeat for many years with regular light exposure. Widely useful: ideal for garden accents, vases and home furnishings, fish tanks, swimming pools, and bar decoration. 2-3 practical use scenarios - Outdoor or garden: line a path or highlight planters at night for enhanced safety and subtle ambience. - Centerpiece or decor: place in a clear vase or bowl to create a luminous focal point in living spaces or events. - Aquatic and wet areas: position near a fish tank, pool edge or bar area to add ambient glow without harsh lighting. Notes: For best results, expose the rocks to bright light before use. The glow duration and brightness depend on light exposure, and the stones retain the capability to glow for many years with continued light charging.