Luonnonkivilajit
Luonnonkivilajit refers to naturally occurring rocks found on Earth. These rocks are classified based on their origin, composition, and texture. The three main categories of natural stones are igneous, sedimentary, and metamorphic.
Igneous rocks form from the cooling and solidification of molten rock, either magma below the Earth's surface
Sedimentary rocks are formed from the accumulation and cementation of mineral or organic particles. This process,
Metamorphic rocks are created when existing rocks, whether igneous, sedimentary, or other metamorphic rocks, are transformed