What is an evolution stone?

an evoloution stone is a special stone that evolves some Pokemon.

EG: eevee:

use a water stone on it to evolve it into a vaporeon

fire stone on it for a flareon

thunder stone for a jolteon

there are lots of Pokemon an evoloution stone can evolve

types of stone:

fire stone

water stone

thunder stone

dusk stone

leaf stone

shiny stone

dawn stone

sun stone

moon stone