These stones need to be placed in the sun to absorb energy in order to glow The longer they are exposed to the sun, the longer the light lasts Can be reused, non-toxic, odorless Used for decorating vases, aquarium landscaping, gardening, swimming pools, bars, villa gardening, parks, etc. Specification: Origin: Mainland China Material: Plastic Color: Color, White, Blue, Orange Red, Purple, Yellow, Green, Light Green, Pink, Blue-Green Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 100x Pebbles Durable and Maintenance-Free: These outdoor decorative stones are made to last, withstanding the test of time without any special care. Resistant to the elements, they maintain their glow and appearance, making them an ideal choice for both indoor and outdoor applications with minimal upkeep. Aesthetic Appeal: Create an ethereal nighttime environment with these fish tank pebbles that emit a gentle, captivating light. Their presence in any decorative arrangement adds a whimsical and dreamy effect, sure to impress and mesmerize onlookers. Versatile Decor: Transform any ordinary space into a radiant oasis with these luminous stones. Perfect for vase fillers, aquariums, garden landscapes, swimming pools, bars, villa gardens, and parks, they provide a magical touch that elevates the ambiance of any setting. Reusability and Safety: These garden pebbles are a one-time investment for continuous enchantment. Crafted to be reused time and again without losing their glow, they are completely non-toxic and odorless, ensuring safety for both your family and the environment. Eco-Friendly Glow: Harness the power of the sun with our glow in the dark pebbles, designed to provide a sustainable glow. Simply expose them to sunlight to charge, and watch as they light up your space for extended periods - the longer the exposure, the longer the luminescence.