Christiaan Huygens' Prism

Origin
Christiaan Huygens was a scientific pioneer of the seventeenth century, publishing works regarding astronomy, physics, mechanics and optics. He was the first to note the moon Titan and proposed the theory of light moving in waves.

During a short-lived stint as a Warehouse clerk, one agent released information on several artifacts to a noted game developer he was fond of, Tetsuya Nomura. The agent was fired, but Nomura used this artifact as the basis for the Kingdom Hearts character Xemnas' weapons.

Effects
When held, this fine cut glass prism will store light instead of refracting it. This process can be stopped at anytime at the whim of the holder, and the light can be released in either a large flash or a concentrated beam. The prism slowly fades to bright white as light is stored and it is released as red light, the colour with the broadest wavelength.