Pebbles is the incidental when mining yellow sand. And it gets its name because of the shape. As natural stone, pebble stone is taken from sand stone, which experienced the crustal movement millions of years ago. It was flushed by flood, textured and friction by running water. After a long time later, it is tormented by waves flush movement and is rubbed by gravel, then finally it is buried for millions of years. It may come into being because of the flood or debris flow. We can know the  actual reason after searching for geologic structure, environment and the mountain around.

The main chemical composition is silicon dioxide, followed by a small amount of iron oxide and manganese, copper, aluminum, magnesium and other elements and compounds. There are many colors for pebble because of the different content of Mineral Ceramic Pigments. It can be light or dark. Also, it can be white, yellow, grey, yellow and so on.

There are some types of pebble products, like natural machine-cut pebble, river stone, stone, dry stick stone, stenciled, landscaping stone, culture stone, natural color marble meters and other decorative building materials. It's non-toxic, tasteless and no coloration . Besides, it is hard enough and abrasion resistant. It is an ideal green building materials.