There are not infinite numbers of evil people in the world. What are you talking about?why? there's infinite numbers of evil people in the world
if one gets the stone, game over.
And why game over? If you make too much gold, it won´t be worth anything anymore.
I translate, what a magician had to say about the stone (Seila Orienta):
A demon (negative being) can make the red stone, but that does not mean, they cannot be kept away. Ultimately every demonic being hate the stone and solely produce the stone for demon´s bargains. Generally the only beings that near the stone are pure positive being to bath in its light. The divine providence decides alone, who is allowed to have such a precious thing. No unmature person is able to evoke such powers. However, this will be like shooting fish in a barrel for the balanced being (the ones that made character development),
I think, the stone is probably made only for positive beings.