get it to full happiness and level it up during the day. for the other forms, Flareon-Fire Stone Vaporeon-Water Stone Jolteon-Thunder Stone Umbreon-Max Hap. and level up at night Espeon-Max Hap. and level up during day Leafeon- Level up near moss rock (eterna forest) Glaceon- Level up near ice rock (North Route-217)
In Pokémon Platinum, the Thunderstone will work on only Pikachu and Eevee. Using the Thunderstone on Pikachu will allow any Pikachu to evolve into a Raichu and using it on Eevee will allow you to evolve into Jolteon.
You must find a special stone (fire stone, moon stone, ect.) and give it to your eevee to evolve it. It evolves according to the stone you gave it. For example, if you gave it a fire stone, it would evolve in to the fire eevee.
in order to get a leafeon you will first need your eevee and then go into eterna forest and find the rock that is covered in moss. level your eevee up there and it will evolve into a leafeon :)
Just level up your EEVEE next to the mossy rock in Eterna Forest.
In FireRed and LeafGreen, the pokemon that evolve via the firestone are as follows: Eevee (into Flareon) Growlith (into Arcanine) Vulpix (into Ninetails)
eevee
A Flareon
You use a water stone on your Eevee.
It does not evolve with a dusk stone in Pokemon Platinum
eevee does only evolve into glaceon in dimond, pearl, platinum ss and hg
Level it up at night
Moonstone
No, you cannot evolve Eevee with a leaf stone. It can evolve into the leaf type Pokemon, Leafeon, but it evolves by leveling it up in Eterna Forest in Pokemon Platinum
The Pokemon that evolve using a thunderstone are: Pikachu into Raichu Eevee to get a Jolteon
Eevee doesn't have a set level to evolve into Umbreon. All you have to do to evolve it is max out its happiness at night. ~KKMG1
Jolteon does not evolve, but to get a Jolteon you need a thunderstone to evolve an Eevee into Jolteon.
You can find stones undergrounds.