The Gyaradosite (Japanese: ギャラドスナイト Gyaradosnite) is a type of held item introduced in Generation VI. It is the Mega Stone that allows Gyarados to Mega Evolve into Mega Gyarados.

Bag Gyaradosite Sprite.png
Pokémon Global Link artwork
Introduced in Generation VI
Generation VI Bag Items pocket icon.png Items
Generation VII Bag Items pocket icon.png Items
Power 80

In the core series games


Games Cost Sell price
PE $30,000 N/A


In battle

If held by a Gyarados (or is present in the player's Bag)PE, allows it to Mega Evolve into Mega Gyarados 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 Gyarados a Gyaradosite or remove a Gyaradosite from Gyarados.

Outside of battle

If held by a Gyarados, allows it to Mega Evolve into Mega Gyarados when it performs a Spectacular Talent during a Pokémon Contest Spectacular while its Trainer has a Key Stone. Gyarados will remain a Mega Gyarados until the Talent Round ends.


Games Description
XY One variety of the mysterious Mega Stones. Have Gyarados hold it, and this stone will enable it to Mega Evolve during battle.
One of a variety of mysterious Mega Stones. Have Gyarados hold it, and this stone will enable it to Mega Evolve during battle.
PE One of a variety of mysterious Mega Stones. This stone will enable Gyarados to Mega Evolve during battle.


Games Finite methods Repeatable methods
XY Couriway Town (requires an upgraded Mega Ring)
ORAS Route 123 (from Chomper the Poochyena)
SMUSUM Battle Tree (64 BP)
PE Indigo Plateau


As a held item
Games Event Language/Region Distribution period
XY Pokémon Center Battle Championship Gyarados Japan May 10 to 18, 2014
June 23 to July 6, 2014
ORAS Winter Counterattack Gyarados South Korea January 16 to 17, 2016
XYORAS Pokémon Center Hiroshima Gyarados Japan June 25, 2015
June 26 to August 31, 2015

In spin-off games

Pokémon Shuffle

In Pokémon Shuffle, the Gyaradosite allows the player to Mega Evolve Gyarados and Shiny Gyarados.

The player can obtain the Gyaradosite by completing the Competitive Stage available in Week 9 of the event rotation.

The Gyaradosite was also available as a prize during the Mega Gyarados Competitive Stage. This Competitive Stage ran on both the Nintendo 3DS and Mobile versions from June 28 to July 5, 2016; January 31 to February 7, 2017; and June 27 to July 4, 2017.

The Gyaradosite enables the following Mega Evolutions:

Stone Pokémon Type Effect Gauge Max  
      Mega Gyarados Water Erases Pokémon on a randomized jagged line vertically.
Actually erases two random jagged lines of Pokémon vertically. These lines may cross.
18 12
      Mega Gyarados Water Erases all Mega Gyarados in the puzzle area. 19 10

In the anime

An uncut Gyaradosite in the anime
A Gyaradosite in the anime

Alain discovered an uncut Gyaradosite in Mega Evolution Special I.

A Gyaradosite physically debuted in Coming Apart at the Dreams!, worn by Lysandre's Shiny Gyarados around its neck in a holder similar to the one Alain's Charizard keeps its Charizardite X in. It is unknown whether this Gyaradosite is the same one Alain had discovered uncut earlier, or a different one.

Another Gyaradosite appeared in When Regions Collide!, where it was held by Misty's Gyarados. It didn't appear to be equipped on Gyarados, but rather, it appeared on its head crest right before Mega Evolving.

A Gyaradosite appeared during Gurkinn's explanation about Mega Evolution in An Adventure of Mega Proportions!.

In the manga

A Gyaradosite in Pokémon Adventures

Pokémon Adventures

X & Y arc

Lysandre owns a Gyaradosite, which first appeared in Chespin Sows the Seeds of Change. After Celosia stole Korrina's Key Stone, it was fashioned into a Mega Ring for Lysandre, allowing him to use it and the Gyaradosite to Mega Evolve his Gyarados. Eventually, X stole the Key Stone back from him.

In other languages

Language Title
Chinese Cantonese 暴鯉龍進化石 Bouhléihlùhng Jeunfa Sehk
Mandarin 暴鯉龍進化石 / 暴鲤龙进化石 Bàolǐlóng Jìnhuà Shí
  French Léviatorite
  German Garadosnit
  Italian Gyaradosite
  Korean 갸라도스나이트 Gyaradosnite
  Spanish Gyaradosita

External links

  This item article is part of Project ItemDex, a Bulbapedia project that aims to write comprehensive articles on all items.