Question

How do you get the everstone in Pokemon Y?

Answer 1

You can find everstones from wild Geodude. There's a 5% chance you will find one. I suggest you go the Victory Road and have Pokemon that know Sweet Scent and to make things easier, a Pokemon with the ability Frisk. Also have a Pokemon that knows Thief. When you run into a horde of Geodude, you'll have frisk, so you will know when it has the everstone. It will take some time but, in my opinion, the easiest way to get everstones.

Hope I helped! :)

Note: I am a horrible speller, so just want to say sorry if anything is spelled wrong!

Answer 2

The Everstone can be found at:

Geosenge Town (from Scientist with a STANDING house-basically top left of PKM Center)
Route 18: from Psychic Inver (Battle: get 7-9 Super Effective moves on his Pokemon)
Held by:
-wild Geodude (5% Everstone held)
-wild Graveler (5% Everstone held)
-wild Roggenrola (50% Everstone held, or 5% Hard Stone held)
-wild Boldore (50% Everstone held, or 5% Hard Stone held-NOTICE-BW and BW2 exclusives)

If you want to get an Everstone easily, I suggest you catch some Roggenrola, or get the one from Geosenge Town. The rest are quite rare.

Source

Answer 3

If you go to the bottom left house of Geosenge town, a scientist inside that house will give it to you. You can still get it when the other houses get knocked over at the end, because that house is still standing.

Also, it's sometimes held by wild Graveller, which can be found in rock-smash rocks.

I hope I helped!