How to get the Elemental Stones
After you have beaten the Elite Four go to Cerulean City, and go to the Cape, where in Blue, and Red versions Bill lived. Now his father lives there, and he wants to see specific Pokemon, and in return he will give you an elemental stone. Here are the Pokemon he will ask for:
Oddish- Leaf Stone
Staryu- Water Stone
Vulpix- Fire Stone
Pichu- Thunder Stone
My recommendation is that once you get the stones, you attach them to your Pokemon, and clone them because there is only one of each stone in the game, and you need many stones to get the final evolutions to complete the pokedex.
Added by: Lu Bu 14 Jun 23rd 2009, ID#5072