These pebble stones can be used as decoration for fish tanks, plants, vases or other places. They can absorb sun light during the day and light up at night. Made of premium resin, they are durable, and tasteless and non- . Fine workmanship and polish so there is no edge. Great for aquarium decoration, making your fish tank shiny and beautiful. Features - Color: White. - Material: Resin. - Size: About 3 x 0.5 cm (LxWxH). - 100 piece set of man-made pebbles. - Please expose them 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. - Made of premium resin, they are durable, and tasteless and non- . Fine workmanship and polish so there is no edge. - Great present to friends to decorate his or . - Keep from children for chocking ! Package list: Luminous Cobblestones Pebbles