<b>NAMTSO</b> provides you with the premium glow in the dark rocks. It is our commitment to be the best providing indoor & outdoor yard backyard pathway park lawn garden fish tank aquarium services<br><br><b>Product Information</b>: 500PCS Blue glow stones/Pack, roughly 1*inch in diameter each<br><br><b>Materials</b>: The glow in the dark stones are made of natural resin, the glow stones are artificial rocks, non-toxic, non- radioactive and odorless <br><b><br>HOW TO USE?</b><br>1. Irradiate glow in the dark pebbles by sunlight or artificial light for at least 1 hour <br>2. Put them in the dark WITHOUT LIGHT, then they glow <br>3. The rocks glow will glow automatically in the dark environment brightly<br><br><b>Wide Range Use:</b><br>The luminous stones can be used yard decor, backyard walkway, pathway or driveway, garden outside decor, lawn, fish tank, aquarium, swimming pool, pond, bar indoor & outdoor grave decoration with these glowing rocks. Glow in the dark gravel can be used for art & crafting, DIY gift decorations