[BigDaddy]

I think there is a misconception here that fire magic is 'weak.' Well, that isn't the case, fire magic is the easiest way to fry enemy armies. Ya, mages can sometimes avoid the effect, and certain enemies are immune... but really, have you ever palyed Abysia? The 3F 3H priest rocks the battlefield, essentially the whole game agasint Abysia, you have a slot locked down for fire resistance... Even in SP. Of course Abysia is an extreme example of a nation that can cast fire spells the whole time next to its own troops without worry of killing itself... And those mages are probably the nicest for just leaving unscripted gems on.

BUT, it isn't hard to get too many fire gems, which makes them less valuable. You could just sell them.