A large agate stone is fixed on a wooden base. Inside the stone there is a vertical hole into which a cable (with a switch) and a 25 W bulb is inserted. The light shines through the stone and thus the pattern and structure of the agate is highlighted. The lamp has an abraded surface - the boulder was exposed to water mixed with diamond sands, which, due to its higher hardness, abraded the stone to a completely shiny surface. In addition, agate cleans the space from electromagnetic smog.