Level up next to a rock with moss. There is one of these in Pinwheel forest
the mossy rock in pinwheel forest
if you levels up eevee near it, it evolves into leafion
Just level up your EEVEE next to the mossy rock in Eterna Forest.
eevee,
Evolve it at 12 pm
Bring eevee to the rock and use a rare candy on him/her to get a glaceon. or level up in grass to evolve, both work also they both work with the green rock in eterna forest to evolve into leafeon
Only Eevee, and it will evolve into Glaceon.
Eevee evolves into Leafeon when you level it up by a Moss Rock which is in Eterna Forest in "Pokémon Diamond, Pokémon Pearl and Pokémon Platinum" and the Moss Rock is in Yaguruma Forest in "Pokémon Black and White."
Nosepass, Magneton and Eevee evolve in certain areas in Pokémon White.
Eevee evolves to Umbreon when it has high happiness, and it levels up while it is dark.
You can get a Jolteon with a Thunder Stone, a Flareon with a Fire Stone, a Vaporeon with a Water Stone, an Umbreon by getting it to max happinesss during the night, and you can Espeon by getting it to max happiness during the day. You cannot evolve Eevee into Glaceon or Leafeon in HeartGold or SoulSilver. Eevee evolves into Glaceon when you level it up at the Icy Rock at Rt 217 or at the Icy Rock in Twist Mountain. Eevee evolves into Leafeon when you level it up at the Moss Rock at Eterna Forest or Pinwheel Forest. As Rt 217, Twist Mountain, Eterna Forest and Pinwheel Forest are only available in Diamond, Pearl, Platinum, Black and White, you cannot evolve Eevee into Leafeon or Glaceon in HeartGold or SoulSilver.
You don't break it. It is used to evolve Eevee into Glaceon.