Description These colorful pebble stones can be used as decoration for fish tanks, plants, vases or other places. Great for aquarium decoration, making your fish tank shiny and beautiful. Please expose the stars stickers to the sun in the daytime to absorb enough light, so that they can glow in the night better. Features     - Color: Blue. - Material: Photoluminescent pigment & Resin. - Size: About 17 * 12 cm/ 6.7 * 4.72 inch(L*W). - 100 piece set of man-made pebbles. - Please expose the stars stickers to the sun in the daytime to absorb enough light, so that they can glow in the night better. - It is a good gravel ornament for your garden, yard or aquarium fish tank. - Keep away from children for chocking hazard!Packing list: 1 * Set of 100pcs Luminous Cobblestones Pebbles Stones Glow in the Dark for Aquarium Fish Tank Gravel Decorations For Garden Yard (Blue)