Introduced in [i][[pokemon xy|Pokémon X and Y]][/i], it is a spherical stone that allows certain [[pokemon (creature)|Pokémon]] to [[mega pokemon|Mega Evolve]]. It works in tandem with a Key Stone used by a Trainer.

This tag also covers Key Stones.

h4. See also
* [[mega pokemon|Mega Pokémon]]

h4. External links

* "Bulbapedia: Mega Stone":[https://bulbapedia.bulbagarden.net/wiki/Mega_Stone]
メガストーン