What gear should I get my mage in Cataclysm?

My suggestion is that when you hit 85, begin running normal dungeons (using the dungeon finder), until you can enter Heroics. Once you can do that, you can start to obtain gear for your Mage, the gear you will want to get will focus mainly on crit and hit, until you get up to the hit cap, however, any gear you can get is good gear up until you have a set that is good enough for raids and such. I know you didn't want to have to find a group, but honestly, that's what you will need to do. Hope this helped you :)