👉 Perisaturnium is a rare element that is not found in nature but has been discovered in certain rocks and minerals. It is also known as the "mysterious" element because it has no known counterpart in nature. The name "perisaturnium" comes from the Greek word "peri" meaning around (like an ellipse) and "satanas" which means "thing". Perisaturnium is thought to be a radioactive element with a half-life of