Description:<br /><br /> 20pcs Aquarium Fish Tank Luminous Light-Emitting Artificial Pebble Stone Aquarium Decoration<br /><br /> The pebble stones are made environmental friend material, non-toxic, no radiation<br /><br /> The light could glow in the dar for more than 10-12 hours after absorbing the sunlight for 10-20 min<br /><br /> It is recycling, and one side of each stone is flat, easy to put it in your tanks, vase and so on<br /><br /> It can apply to fish tank, pebble road, wall, vase, flower pot, swiming pool and so on<br /><br /> Specification:<br /><br /> Material: Resin<br /><br /> Average Diameter: 3cm\/1.2&amp;quot;<br /><br /> Color: Blue and Yellow(in the dark), White and Yellow(under light)<br /><br /> Packge Inclues:<br /><br /> 1 x 20pcs Luminous Light-emitting Artificial Stone