Evolution stone
An evolutionary stone is a type of item with mysterious properties. It radiates energy that causes some Pokémon to evolve.
If a Pokémon's next stage requires the use of a stone, then it can be applied at any time, thus causing instant evolution.
However, once exposed to an evolutionary stone, most Pokémon can no longer learn any more moves by leveling up. There are exceptions to this rule, however, and certain moves are exclusive to the stone-evolved Pokémon.
There are six types of evolutionary stones:
File:FireStoneSprite.png Fire Stone
Fire Stones can be bought at the Celadon Dept. Store for File:Pokébuck sign.gif2100, or are given in exchange for a Red Shard. They can also be found on the ground in certain locations in the wild.
Evolves
File:WaterStoneSprite.png Water Stone
Water Stones can be bought at the Celadon Dept. Store for File:Pokébuck sign.gif2100, or are given in exchange for a Blue Shard. They can also be found on the ground in certain locations in the wild.
Evolves
File:ThunderStoneSprite.png Thunder Stone
Thunder Stones can be bought at the Celadon Dept. Store for File:Pokébuck sign.gif2100, or are given in exchange for a Yellow Shard. They can also be found on the ground in certain locations in the wild.
Evolves
File:LeafStoneSprite.png Leaf Stone
Leaf Stones can be bought at the Celadon Dept. Store for File:Pokébuck sign.gif2100, or are given in exchange for a Green Shard. They can also be found on the ground in certain locations in the wild.
Evolves
File:MoonStoneSprite.png Moon Stone
This is one of two stones which can never be bought at stores. It can be found in a few locations in the wild. There is also a very small chance of stealing one off of a wild Lunatone or Clefairy with Thief.
Evolves
File:SunStoneSprite.png Sun Stone
Unlike other stones, this stone was first introduced in Generation II.
This is one of two stones which can never be bought at stores. In Pokémon Gold, Silver and Crystal, it is the first prize at the National Park's Bug-Catching Contest. In Pokémon Ruby, Sapphire and Emerald, a man in Mossdeep City gives you one. There is also a very small chance of stealing one off of a wild Solrock with Thief. In Pokémon FireRed and LeafGreen, one can be found in the Ruin Valley on Fortune Island.