Gemstone

A Gemstone (原石) is the term used to describe an ESPer who was born with their powers. There are few of them in the world and many aspects of their powers can't be described using scientific methods. In difference with artificially developed ESPers the gemstones emits larger amounts of AIM field from their bodies. It has been mentioned that the total number of Gemstones of the world is probably for about 50.

Kamijou Touma doesn't belongs to this group because his powers are not AIM based. A member of the Academy City board of directors, Kaizumi Tsugutoshi, once had a conversation with a helper he hired from Kamijou Touma's school (Kumokawa Seria (雲川芹亞)), and came to the conclusion that the Imagine Breaker is not a gemstone and is probably something beyond their understanding.

Academy City currently has a theory that explains the Gemstones existence : If Academy City's espers are an artificial diamond then the Gemstones are a natural one. To further explain the theory goes as “If a certain phenomenon has been caused artificially, then, as long as the same circumstances as in the experiment are recreated in the natural world due to some factor or another, the same phenomenon will occur with no help from humans". It should be noted that most of the people in Academy City scorn the idea of people having powers without going through the well known power development curriculum. &

It should be noted that Gemstones are considered prized materials, there are some organizations believe that by acquiring and analyzing these gemstones they'll set the foundations of creating their own psychic power development institutions. USA and Russia have been known to have been pursuing power development through the cold war, and it's hinted that they haven't given up on having their own power users even up to this day.

Known Gemstones

 * Himegami Aisa
 * Sogiita Gunha
 * Gemstone Girl
 * Alfar