Phaseblades appear to be based on the Light Saber from the Star Wars franchise. It even goes so far as to include the humming sound effect and the emitted light when swung.
It may be possible that the phaseblade will come in different colors, as the only one seen has been specified as yellow. The yellow phaseblade requires 10 topaz. It is speculated that it could use other gems, such as emeralds (green), sapphires (blue), amethysts (purple), rubies (red), and diamonds (white)
The phaseblade emits a small amount of light when swung.