Plastic luminescent pebbles
Plastic luminous cobblestone is a man-made glowing stone, based on Photoluminescent pigment and special synthetic resin. When exposed to light sources, the photoluminescent pigment inside Luminous cobblestone becomes excited and glow in the dark with very stronger initially , then reducing slowly overnight. The glow is best seen in a dark area, where ambient light sources such as streetlights and moonlight are absent.
Glowing in the dark & self...