Well, you can use your gems to decorate your house if you choose to get one. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
I liked meterstike, a very powerful skill early on it the game.
Though, nothing is immune too hellspikes (IIRC) so, it might work well for you. I am just speaking from my experience. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
At this level, i think those are the best skills right now.