Granite is the most common igneous rock in nature. The name granite comes from the Latin granum, or grain, and refers to the grain-like crystalline structure of the rock. Strictly speaking, granite is a rock that mainly contains quartz (between 20 and 60 per cent) and feldspar (about 35 per cent), but in everyday life, the word granite refers to a wider range of rocks with a grain-crystalline structure. Due to its high quartz content, granite falls under the category of hard rocks, which makes it suitable for the manufacture of products that require a high degree of resistance to wear, such as cladding, flooring and steps. In studies conducted on the degree of bacteria retention on the surface, it was found that polished granites are superior to other materials used for countertops. Combined with resistance to temperatures of up to 250 degrees Celsius and a hardness greater than that of kitchen utensils it does not succumb to scratching. Granites are also very suitable for making kitchen, bar and bathroom counters.