So im entering the pvp world slowly, and so i've been reading a lot of guides on it (elitist jerks, the warlock's den, etc) but as surprising as it is, nowhere is it mentioned the gems we should get for each gem color socket...
And that's why im turning to the warlocks around here, what do you usually get on your blue/red/yellow sockets?
I've always relied on gear for resilience. I use gems for Spell Penetration (if not capped) -> Int -> Haste. Of course, arenajunkies is the authority on it...