Hmmm..... Interesting. I think I should add some of these mega stones to my wanted list along with the Destiny knot thing for my Pokemon y game. Thanks.
Also, when you use a mega stone on a pokemon, does it just disappear after it was used to evolve them into the mega forms (just like the thunder stone, fire stone, water stone, and etc)?
And do the pokemon remain at the mega forms permanently? (Cause I could of sworn that I remember you guys told me something that makes them return to their normal forms)