Geolumin has introduced glow-in-the-dark technology like never seen before. Imagine using all-natural rock, pea rock or sand and then making it glow in the dark all night, every night, in the rain, snow or ice. Devote a 3-foot x 3-foot section in your gift shopping or near your checkout area, and let your customers look and see these amazing products. The picture shows Geolumins' day/night capabilities.