You can find everstones underground
Chat with our AI personalities
No
Nothing, to evolve haunter you have to trade him...
No Pokemon evolves with an everstone. In fact, an everstone negates the effects of evolution if you give it to a Pokemon to hold.
Get a Haunter and trade it with a friend in the Union Room, then it will evolve into Gengar if it doesn't have an everstone.
What u do with a everstone is u give it to a Pokemon and it wont evolve