Well, since the beta is no longer forbidden info by blizz, they unlocked the beta boards (I apologize profusely to blizz if this was by accident..not that they'll see this post, but ANYWAY...). On the beta board, I found a post on how jewelcrafting works, figured I'd post the link. Have fun.
http://beta.worldofwarcraft.com./thread.html?topicId=220032&sid=1
Gotta say, I am awed. If this is the quality going into the game mechanics of the expansion (and everything so far suggests it is), I am amazed and am left drooling with anticipation!