How to evolve Eevee in Cobblemon.
Eevee evolves into Jolteon when you use a Thunder Stone on it.
Eevee evolves into Vaporeon when you use a Water Stone on it.
Eevee evolves into Flareon when you use a Fire Stone on it.
Eevee evolves into Espeon when it levels up with high friendship (160+) during the day.
Eevee evolves into Umbreon when it levels up with high friendship (160+) at night.
Eevee evolves into Sylveon when it levels up with high friendship (160+) while it knows a Fairy-type move.
Eevee evolves into Leafeon when you use a Leaf Stone on it.
Eevee evolves into Glaceon when you use an Ice Stone on it.
Evolution line
What Eevee needs
8 paths
Where to get the item
Thunder Stone. Thunder Stone ore generates in highlands and hills biomes at 16 veins per chunk, anywhere from Y -64 to Y 320, and more thinly in jungle and plains biomes (8 veins). Mine it like any other ore.
Water Stone. Water Stone ore generates in ocean and freshwater biomes at 16 veins per chunk, anywhere from Y -64 to Y 320, and more thinly in jungle, thermal, and tropical island biomes (8 veins). Mine it like any other ore.
Fire Stone. Fire Stone ore generates in desert, thermal, and volcanic biomes at 16 veins per chunk, anywhere from Y -64 to Y 320, and more thinly in nether biomes (1 vein) and sandy biomes (8 veins). Mine it like any other ore.
Leaf Stone. Leaf Stone ore generates in forest, jungle, and lush biomes at 16 veins per chunk, anywhere from Y -64 to Y 320, and more thinly in swamp and tropical island biomes (8 veins). Mine it like any other ore.
Ice Stone. Ice Stone ore generates in glacial, snowy forest, snowy taiga, and tundra biomes at 16 veins per chunk, anywhere from Y -64 to Y 320, and more thinly in freezing biomes (8 veins). Mine it like any other ore.
Moves it learns on evolving
These are offered the moment the evolution completes. Decline them and you have to relearn them later.
Is it worth it
Base stat totals, from the Cobblemon 1.7.3 species files.