I think it's just polished aluminium .. you can probably call around the metal shops in town. A couple years ago I went looking for some specular aluminium, found some within 2 or 3 calls. I can't remember the specific place anymore and I never bought any in the end, but anyhow I think you should be able to find some. Maybe try Metalworks ..
http://yellowpages.ca/bus/Alberta/Me...d/1054159.html