Photoluminescent Stones can be used in a variety of exciting applications. Scattered randomly they combine both decorative and practical qualities, providing a striking effect on footpaths, steps, gardens and rockeries whilst also encompassing a safety element at night. Their list of applications is only limited by your imagination as they are endlessly versatile in many different media. Glow stones in other size, shape, and color can be custom-made. Colors: Green, Blue, orange, sky-blue.The size of glow in the dark stones is 5-10mm.