Fire rocks: Rocks formed by the hardening of molten materials found in the earth due to continuous slow cooling, or rapid cooling that occurs after the exit of molten materials through volcanic eruptions from the ground to the surface, and this type of rock is characterized by its strength and durability; It extracts a number of stones that are used in construction processes, such as granite, which is characterized by smoothness and gloss when polishing, and is used for the work of kitchen surfaces, and the construction of bridges, offices, floors, interior decoration, in addition to basalt, which is used for its hardness in construction and architecture, and paving roads, is [3] Sedimentary rocks: rocks formed by crushing, sedimentation, and cementing of sand and rocks that result from weathering and erosion, and appear as layers of accumulation as a result of sediments transmitted. [4] From this type of rock are the following: Stone or sandstone, which forms underground in sandy layers of quartz, in addition to large amounts of feldspar, silt and clay; Its molecules hold together by pressure and heat Mineral salts are similar in color to the surrounding sand; they may be brown, yellow or red, and sandy rocks appear clear to the eye in the form of plateaus, and are resistant to atmospheric factors.Therefore, they are well used in road construction, bridge structures, and commercial and residential buildings. Some species do not resist climatic factors, forcing people to restore them. Sandstones can be made industrially by mixing sandstones with water and some salts, inserting them into special kilns, then coming out of the oven and leaving to cool and hold together. [5] Giri: Who j It consists of calcified aquatic organisms, shells and shells, and has multiple colors. Limestone is used in construction, especially underground warehouses for storing oil and natural gas, as in gas stations. Limestone is used in the cement industry. [6] Metamorphic rocks: a third type of rock created by the change in the shape of igneous and sedimentary rocks under the influence of pressure and heat factors, chemical solutions active deep in the ground, or where tectonic plates meet; when the natural and chemical conditions that affect rocks change , And become The minerals involved in their composition are not fixed; they are transformed into new metals that are more suitable for the new environment, resulting in a change in the nature of the rocks. [7] Metamorphic rock products are used in many different building processes. Various structures, such as museums, temples, and buildings, can also be used for decking and flooring. [8] Artificial stone: a name given to the various artificial stone products that have been produced to replace natural stones in the interior and exterior walls. Lightweight concrete processing materials b Compared to natural stones, it is characterized by low cost, light weight, diverse shapes, and contrasting colors, often weighing between (2 - 4) centimeters, and the manufacture of artificial stones began in the early sixties in the United States of America, where they first appeared artificial, With the development of manufacturing technology, however, it became just like natural stone. [9]