Eight Magic Color Selection Crystal

Eight Magic Color Selection Crystal (八色魔選晶, Hasshiki Masen Shou) is a Magic Tool used at Magnostadt Academy for classifying the eight different kinds of Magicians and Rukh in a person. The kinds of rukh are:
 * 1st type: rukh that manipulate flames
 * 2nd type: rukh that manipulate water
 * 3rd type: rukh that manipulate light
 * 4th type: rukh that manipulate lightning
 * 5th type: rukh that manipulate wind
 * 6th type: rukh that manipulate sound
 * 7th type: rukh that manipulate power
 * 8th type: rukh that manipulate life