Is rayquaza supposed to have a mega stone or not?

Question

I'm playing omega ruby and don't know wether it's a glitch or not I even have it another item so is it a glitch in my game or is it supposed to happen

Answer 1

No, its not.

Rayquaza can only mega evolve after learning the move Dragon Ascent, which can be learned by binging it to a move tutor in meteor falls. After it learns it, the mega evolve button should always appear at the bottom, so long as that move is in its moves.

Hope I helped!