[REQUEST] (question actually) On Mega Stones not in Pokemon X

[thecofybean]

I only have access to Pokemon X as of this moment.
And I am trully a newbie (like 1.5 months old?).

Anyway my question is, how can I ever have my own mega stones not found in Pokemon X, most specifically,

Heracronite
Galladite
Charizardite Y

etc etc.

Thanks in advance!

[SenpaisLittleEevee]

You need someone willing to trade them over from Pokemon Y or move the pokemon you want to mega over to ORAS (since it wont work in XY)

[Jaerri]

there are some mega evolutions which werent introduced until OR/AS. and some are X exclusives some Y. you have to find someone who wants to trade you the stones. and the metagrossnit for example was event only (in my country though)
here is a list i found after brief googling:
serebii.net (locations OR/AS only)

[thecofybean]

thank you, kind sirs!

[Jaamon]

Hello I can trade my aggronite for your tyranitarite if you want to.Please let me know.

[kikiliano]

Hey dude i could maybe give you the charizardite y from oras. Just pm when you want to trade