Nerf

[DeadlyShoe]

...

You can build a balanced game with gem generators, as long as everyone has in some form equal access to them. I don't mean every nation automatically gets Clam of Pearls spam, just that it's theoretically possible to balance it. ;p

That, of course, in no way discusses the negative impact of gem generators on gameplay particularly as pertains to map control, gold, and risk/reward.