A stone that glows in the dark: Iranian scientist discovered a rare variety of a known mineral

The scientist and researcher Prof. Majid Mollandali Pishnamaz from Iran has published a study introducing a unique type of crystal called "Immanite". The crystal, which is currently kept under heavy security in a safe, belongs to the family of known calcite stones but exhibits unusual behavior not found in ordinary specimens of this type: an independent ability to illuminate and glow in the dark.

Advanced laboratory tests revealed that "Immanite" is not an entirely new material, but a rare version of common limestone. The significant difference between it and ordinary stones is that trace amounts of other substances, such as the element strontium, were trapped inside it over the years. These substances created a kind of "light trap" within the stone; when ultraviolet light hits it, these traps slowly release the energy, causing the stone to emit a stable green glow that lasts for more than three seconds.

The researcher estimates that this special stone formed inside an ancient stalactite cave in a quiet, humid, and dark environment at temperatures between 10 and 30 degrees Celsius. Over thousands of years, calcium-rich water seeped slowly through the ground, creating this beautiful crystal in a calm and prolonged process. This slow pace allowed the foreign, luminescent substances to mix perfectly and uniformly within the stone.

Beyond the impressive beauty of the glowing stone, the discovery holds significant technological importance. The natural mechanism that allows the stone to store light and emit it so stably is of great interest to scientists developing technologies for screens, optical fibers, and other advanced light-based materials. Understanding how nature created these "light traps" may help humans produce similar, more efficient artificial materials for industrial and scientific use.