<b>Specifications</b><br>Color: white<br>Material: Polystyrene (PS)<br>Diameter: 0.8"-1.2"/ 2-3cm<br>Quantity: 500 pcs white glow pebble<br><br><b>Features</b><br>Can be placed in water, no harm to fish and water<br>After absorbing light, the pebble will glow brighter within 2-3 hours, and then the brightness will decay quickly.<br><b>NOTE: As the pebbles can glow only for 2-3 hours, so please check the glowing effect within 2-3 hours after leaving the light source.</b><br>