I saw a Fire Stone in Fiery Path but you will have a strength to move the boulder
You can also trade a red shard to the Hunter so you can have a fire stone
The hunter can where be found?
sheesh.!
The hunter can be found outside of mossdeep city on a house on one of the near island to the left he will give you leaf stones for green shards thunder stones for yellow shards fire stones for red shards and water stones for blue shards you can catch Pokemon underwater or hunt for a long time with hidden ones (also underwater) and turn them in hope it helped.
You can also ask a guy in the space center in mossdeep city he will give one to you
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You can find a Fire Stone in the Fiery Path after you get the HM for Strength.
Use a fire stone on Vulpix.
Once you find a pokemon of the fire type which has something to evolve into, (like a numel or torchic or something) you then go into the items pocket in your bag, select the fire stone, and click use. It will then go to the screen with your party of pokemon. Select the fire pokemon mentioned earlier, and it'll evolve.
get eeve and use a fire stone
you can only trade a sun stone with someone who has fire red, leaf green, or emerald.