Glow in the dark rocks from Techno Glow is quality hand-made glow rocks and stones that illuminate all night long! Our large stones have no sharp edges and are very durable. Smaller stones are more jagged and work well as aggregate (sized at roughly 8-20mm). Create an indoor or outdoor glowing oasis with these glow in the dark stones. Can be used for an ambient glow driveway, landscaping, flower beds, pots and much more. Don't waste money on low output glow in the dark plastic pebbles that won't glow longer than an hour and lose color after one season. Techno Glow rocks will last a lifetime indoors and out. Simply expose the rocks to direct sunlight to activate the glow. These glow rocks also illuminate under a black light making them perfect for aquariums and terrariums.