luonnonkiviin
Luonnonkiviin refers to natural stones found in the environment. These stones are formed through geological processes over millions of years. They can be categorized into three main types based on their origin: igneous, sedimentary, and metamorphic. Igneous rocks form from the cooling and solidification of molten rock, like granite and basalt. Sedimentary rocks are created from the accumulation and cementation of mineral or organic particles, such as sandstone and limestone. Metamorphic rocks are formed when existing rocks are transformed by heat, pressure, or chemical reactions, like marble and slate.
The properties of luonnonkiviin vary greatly depending on their composition and formation. These properties include hardness,
Luonnonkiviin have been used by humans for various purposes throughout history. They have served as building