I put this together because I was losing track of what I had and what I needed. It started as a rather strange looking outline lol.
This is by no means the end all be all of gemming, but I have found this works for me. It's a little clunky in this format but it works well enough.
As with anything WoW, as your gear changes you will have to re-evaluate all your gem choices and slots seeking the best combination.
While Hit is normally my #1 priority followed closely by Haste and Spell Power, I have found I'm giving up some Hit for Spell Power lately. I guess it's all about the burn ;)
This will of course change when Cataclysm comes out. But until then...happy gemming!
For Meta socket --> Chaotic Skyflare Diamond