Sandstone is actually a sedimentary rock formed by the consolidation and compaction of sand, which is held together by a natural cement, such as silica. Natural sandstone is an extremely hard and tough material. Sandstone is typically the youngest of the quartz-based stones, withmore...
Limestone is a sedimentary rock consisting mostly of calcium carbonate, CaCO 3 , used as a building stone and in the manufacture of lime, carbon dioxide, and cement. Essentially a Dolomite stone possessing oil-resistant properties, Limestone shows high resistance in freezing and more...