Gemstone Mining

The Gemstone Mining incident was an event that occurred before and during October in which all known Gemstones outside of Academy City were seized and then rescued. Former Director of the Stargate Project, George Kingdom, had finally settled in creating organizations for the study of the Gemstones. Apparently there were approximately 50 research organizations that had independent financial backing and different methods of being funded so none could be tied to each other. Kaizumi Tsugutoshi and Kumokawa Seria tasked themselves with dealing this incident before the Gemstones became harmed or worse. Kumokawa knew that with their own power and dealing with this in an "official way" it would end up in them not being able to efficiently gather all of the gemstones involved; to counter this she enlisted the aid of Heaven Canceller and had a deal with the Misaka clones.

Trivia

 * This operation would be the final cause of George Kingdom's demise at the hand of Kinuhata Saiai, by orders of Academy City's ITEM's manager.
 * Gemstone Girl would also be attacked and pursued by an organization, however she would escape from peril by accident thanks to the help of Kamijou Touya instead of the Sister clones.