The Gengarite (Japanese: ゲンガナイト Ganganite) is a type of held item introduced in Generation VI. It is the Mega Stone that allows Gengar to Mega Evolve into Mega Gengar.
If held by a Gengar (or is present in the player's Bag)PE, allows it to Mega Evolve into Mega Gengar if its Trainer has a Key Stone. Each Trainer can only Mega Evolve one Pokémon per battle.
Unaffected by item negating effects (such as Embargo and Klutz). Item manipulating effects (such as Trick and Fling) cannot give Gengar a Gengarite or remove a Gengarite from Gengar.
If held by a Gengar, allows it to Mega Evolve into Mega Gengar when it performs a Spectacular Talent during a Pokémon Contest Spectacular while its Trainer has a Key Stone. Gengar will remain a Mega Gengar until the Talent Round ends.
In Pokémon Shuffle, the Gengarite allows the player to Mega Evolve Gengar, Spooky Gengar and Shiny Gengar.
The player can obtain the Gengarite by defeating Mega Gengar in Stage 135 found on Castle Noapte.
The Gengarite enables the following Mega Evolutions:
A Gengarite belonging to Gurkinn's Gengar first appeared in Changing Gengar. Both Gengar and his Mega Stone were given to X shortly afterwards.