That sweet baby above is a replica energy sword from the Halo series of video games. It is 27 in. long, with 19.25 in. blades, 7 in. handle. and it Includes black wall plaque. It's also got that titanium rainbow effect reserved for the most awesomest fake weaponry. According to the sword's seller, it is "Accurate in design and size, extremely unique, and well built. Easily one of the most unique and awesome swords in our collection." Hear that? Awesome!
It will cost $49.99, which is pretty cheap, but please take into account the damage to your social life, and the chance of jail-time if you decide to try the thing out in real life.