If you haven't been keeping up with the news lately you'd notice that the obsidian shuffle is going to be nerfed even further when patch 4.2 hits. According to Joystiq.com and their new article the new vendor price for uncut green gems has been changed to 50s.
What will happen to the obsidian shuffle? For one, people will learn to adapt, but I can definitely see the casual jewelcrafters panicking and possibly leaving the market alone for quite some time. The ore market will likely crash and I'm sure we can expect to see people swap to gathering herbs instead of gather ore after this patch. This new update brings the new vendor price for obsidian ore at 15g per stack.
I did some articles back in the past, I'm not going to rewrite them, but instead relink them to you. It's the same content, same idea, the obsidian shuffle gets nerfed and I'm sure what the outcome is going to be.
What do you think will happen to the obsidian shuffle in 4.2? Will it still be worth doing? Will the enchanting material market crash due to a high supply & low-medium demand?