Gneiss is one of the oldest natural stones found. It is metamorphic and widespread. What distinguishes it are its stripes. They are due to the minerals that make it up and alternate light with dark ones. It has a similar structure to that of granite. Its hardness makes it a good substitute. Types of gneiss are used for cladding buildings. It is suitable for interior and exterior wall decoration and many others. Its hardness and durability allow the things made of this material to last for centuries. As a good insulator, gneiss-clad houses keep the summer cool and the winter warm.