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.