I think you mean Clefairy (Mt. Moon, Rocket Game Corner) and Jigglypuff (Route 3). You can evolve them with moon stone.
(You can make evolve Nidorina & Nidorino with moon stone, too. So this way these are moon pokémons, too)
use moon stone
Who cares? that's the question
mt moon
Use a moon stone on it.
you find them in mt.moon
You can find some in Mt. Moon
Mt moon can be found on Route 4.
give it a moon stone
there is no mt moon in that game. You must be thinking of Pokemon firered or leafgreen unless you mean mt coronet.
? What is a dark stone?? Do you mean Moon Stone?
Easy, just use a moon stone. :)
You have to evolve a Jigglypuff using a moon stone.