Buy Discount Quality Sandblasting Glass Beads with Low Price made in China. Harvest Enterprise is Sandblasting Glass Beads manufacturer and supplier in China. Glowing Stone called luminous cobblestone, photoluminescent cobblestone, luminescent pebble, is a man-made glowing stone, With a shape of cobblestone, spall or sand, is a kind smart artificial plastic products or silicate products, with special luminescent pigment (glow in the dark powder) and special synthetic resin or silicate compound. 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.