Pokémon X & Y Cheats: How to obtain Pinsirite & Heracronite to get Mega Pinsir and Mega Heracross
Mega stones! You want 'em! We know where to find 'em!
First, keep in mind that you won't be able to find these Mega Stones until you beat the game and complete a slew of quests to unlock this ability. You can find the tutorial on how to start hunting for Mega Stones here.
Definitely one of the easiest Mega Stones to find, as it's literally right at the entrance of Santalune Forest.
The quickest way to obtain it is to Fly to Aquacorde Town and just head North past Route 2 into Santalune Forest. Walk directly North into the patch of grass and you'll find the Mega Stones for your respective version right there.
As always, remember to do this after 8PM and before 9PM and after touching the Sundial in Anistar City.