100% Natural Stones: These stones are scoured and polished by smooth river stones. They have a smooth surface. Some stones may have a little flaw because they are natural stones.
Size: The stones we selected are about 0.8-1.6 inches in width. 2 pounds pebbles stones are packed in a mesh bag. You can rinse with water to remove dust on the surface during the shipment.
Featuer: The main component of these stones is as high as 98% silica, which can purify the water quality in the water, and they are very beautiful in the water and so they can be used on the bottom of fish tanks and aquariums.