Stone

Stone is a naturally occurring solid aggregate of minerals and or mineraloids.

Taking advantage of the hardness and physico-chemical properties that rocks have. these are used to create some architectural elements such as: Arches, slabs, ornamentation, streets, high strength concrete, coatings, etc. Rocks have: Impermeability, hardness and chemical elementsin its composition.
 * Why are stones used in construction?**

How many kinds of stone do you know? Metamorphic, sedimentary and igneous.