you go 2 your PC and put the stone that you want on it and if its the right stone it'll evolve
you cant
If you mean using stones on a Pokemon such as Vulpix or Growlithe, then yes. Those types of Pokemon evolve that way, thus getting higher stat gains. You cannot use stones on any Pokemon though. Only Pokemon that can evolve using those stones. See related links for a list.
EVEE
Eevee it can pretty much use all of them.
You go to your bag and select one of the evolution stones you have, then you select "Use" and the screen will go to your Pokemon party. Then you select the Pokemon that is able to use that particular stone to evolve. If you don't have any of the particular Pokemon that uses evolution stones to evolve, it won't work.
You select the stone, and say use. Next you select the Pokemon, it will say able or unable if a Pokemon can use it or not.
Dusklops evolves into dusknoir with one.
Eevee use stone to evolve
its good to use evolution stones as they make you're Pokemon stronger, but use them carefully, there are only a limited amount of each stone in the game.
to use the devaluation stone on pokemon vortex you need to have no i mean no stones at all, then click EVOLVE and you will have a fossilised pokemon :):):):):):) have fun!! ^
use stones fire water electric
use strength