?Glow In The Dark Rocks? These stones can't glow by themself. But these pebbles absorb enough sunlight during the day to glow up to 2-3 hours at night or any other dark environment. Please radiate them with light again if they are not bright enough. Quantity: 300pcs Size: 2-3cm/0.78-1.18inch Color: white/green//blue Material: Photoluminescent pigment + resin Usage: Lighting the pathway, driveway, walkway, flower bed, potted plants, or fish tanks. This is the best DIY decoration for vases, fish tanks, aquarium, crafts, swimming pool. Ideal for your garden, patio, lawn, yard.   Luminous Stone FAQ: 1. Q: Will the luminous stone not shine, is it invalid? A: The luminous stone is a light-storing product. The principle is that it can emit light by absorbing the light source. Each time the light is emitted is 8-12 hours, during which the first 1-2 hours is the high light period and continues to glow. The received product did not emit light because there was no absorption light source during the logistics. As long as you get sunlight or light for a while, you can shine again. 2. Q: Why do I have a day's sun during the day and it is still not lit at night? A: Because the principle of luminous is to absorb light and emit light, which means that it begins to glow in the process of storing light. If the light is absorbed during the day, but after a dusk time, the luminous period of the luminous light is over, so you can only see it slightly. Weak light, but when you turn on the lights, you can see very bright. 3. Q: Is the luminous effect of each color of stone the same? A: he luminous effect of each color of stone is basically the same, each color has its own characteristics, you can choose the color you need, not only at night, but also during the day can decorate your garden well. Note: Due to the difference between different monitors, the picture may not