Event stones are special rock bodies that remain behind after special events associated with materials that came from the sky, volcanic activity and seismic activity. Meteorites, which are also known as ‘extra-terrestrial visitors’, are an example. They may be fragments of asteroids, planets, large satellites or comets in the solar system. They contain information about celestial bodies and thus are valuable for collection. Another example is volcanic bombs, which are products of volcanic eruptions. When hot magma or lava is thrown into the air, volcanic bombs form due to the rapid movement and condensation. These stones reveal traces of the Earth’s processes and therefore have high scientific research value. Event stones have a unique ability to attract collectors because every event stone looks different, and so each has a unique charm.