you dont need a stone you need to level it up in eterna forest
you dont use a stone to evolve eevee into leafeon. You have to level it up near the mossy rock in eterna forest. so just use a rare candy when by it.
you can evolve evee to leafeon by taking leafeon to a stone in the forest by the second gym leader.
To evolve your Evee into Leafeon, get a leaf stone, and use it on Evee, and it will evolve into Leafeon! Have fun with Leafeon! -Garrett
use a leaf stone
I'm pretty sure you need to find a Leaf Stone.
eve to leafeon
You don't need to use the stone, just level up eevee anywhere in the forest and it will evolve into Leafeon.
leaf stone
It is called a "leaf stone"
to get a leafeon in Pokemon platinum, you need to have an eevee and then at any lvl you have to use a leaf stone!
you can't. there's no moss-stone to evolve it, so you'll need to trade it from diamond, pearl or platinum
Eevee - Leafeon Gloom - Vileplume Weepinbell - Victorybell Exeggcute - Exeeggutor Nuzleaf - Shiftry I think that's all Evee doesn't evolve with a leaf stone there is a special stone somewhere and you need to be near that stone with the evee and battle with it until it likes you then level it up again and its leafeon.