Sandstone is suitable for  outdoor stone  carving

Sandstone is also called sand rock, the sandstone by mineral silicon and a particle coagulation crystallization. Sandstone silicon and iron oxide by calcium carbonate and add mixture condensed form durable and abound in strength. The hardness of sandstone in some areas is even exceeds the granite , so the construction would spend much time. Due to its expansion of particle coarse for the sandstone, particularly the strong rate is hard, it is appropriate to choose for large outdoor stone carving works.

Limestone is commonly used as a statue

Limestone is formed by the magnesium limestone and calcium carbonate, which is different from the sandstone. Because of its quality of fine and pure white, as well as high processing adaptability, it is always the first for sculptor to make the stone statue. A variety of limestone contains fossil shells and Marine biological bones; this kind of material just need undergo processing, or it has the function of aesthetic itself. The origin of Limestone is wide, the color and lustre is quite abundant, the texture is soft, it is therefore commonly used as a statue. And because it is easy for it to make the small shelf sculpture, thus, it is more suitable for beginning carver to choose.