to evolve an eevee to an espeon you need a water stone

you dont evolve eevee with a water stone that would make it a vaporeon what you need to do
is get its happiness up by giving it haircuts winning battles bringing up its stats ect
then level you cant check what level its happiness is you need to go to goldenrod city go
into the house just above the bike shop and talk to the lady make sure eevee is in your
first position in your party and she will say if its happy or not and then try and level
it up once during day hope this helped