In the core series games
If held by a Gallade, allows it to Mega Evolve into Mega Gallade 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 Gallade a Galladite or remove a Galladite from Gallade.
Outside of battle
If held by a Gallade, allows it to Mega Evolve into Mega Gallade when it performs a Spectacular Talent during a Pokémon Contest Spectacular while its Trainer has a Key Stone. Gallade will remain a Mega Gallade until the Talent Round ends.
Pokémon holding Galladite in Pokémon Omega Ruby and Alpha Sapphire cannot be traded to Pokémon X and Y.
| One of a variety of mysterious Mega Stones. Have Gallade hold it, and this stone will enable it to Mega Evolve during battle.
In spin-off games
|| This section is incomplete.|
Please feel free to edit this section to add missing information and complete it.
In Pokémon Shuffle, the Galladite allows the player to Mega Evolve Gallade.
The player can obtain the Galladite by defeating Mega Gallade in Stage 580 found on Prasino Woods.
The Galladite enables the following Mega Evolution:
|| Mega Gallade
|| Erases a jagged line of Pokémon vertically.
Actually erases two jagged lines of Pokémon vertically. These lines cannot cross.
In the manga
In other languages
|| 艾路雷朵進化石 Ngaaihlouhlèuidó Jeunfa Sehk
|| 艾路雷朵進化石 / 艾路雷朵进化石 Àilùléiduǒ Jìnhuà Shí
|| 엘레이드나이트 Elladenite