Collect yellow and red shards and take them to the treasure hunter just to the west of mossdeep.
pickachu evee
get eevee and use a fire stone
eevee and pikachu.
You can get the thunder stone by going underground and digging for it in Pokemon diamond/pearl ( the thunder stone , fire stone, water stone, and the leaf stone is very rare, so good luck!).
Use a Fire Stone!
Use a fire stone on Vulpix.
use it on a Vulpix, Eevee or growlithe
They can be sold at kecleon shops in dungeons
Moonstone everstone sun stone water stone fire stone leaf stone and thunder stone
The sun stone is an item similar to the thunder stone, water stone, fire stone and leaf stone it evolves two pokemon: Gloom and Sunkern.
You have to have a fire stone, water stone or thunder stone. Either one.
Well, this may not be helpful, but Fire stones evolve some fire Pokemon... Sun stones also evolve fire Pokemon, (Fire stone, Thunder stone and Water stone also evolve "Eevee", the Pokemon you get after completing sinnoh dex.