This is a very large store that is placed in celadon city.
You can buy them at the celadon city dept store.
Celadon Dept. Store, check all the floors
You can buy fire stones at the celadon city dept store.
You can buy mail at the Celadon Dept Store and if memory serves on the 5th Floor.
Fire Stones can be purchased at the Celadon City Dept Store on the Fourth Floor.
on top of the Celadon Dept. Store
after it learns flamethrower Growlithe evolves only with a Fire Stone. You can purchase one at the Celadon Dept. Store.
You can actually purchase thunderstones on the 4th floor of the Celadon City Dept Store you can buy as many as you want.
Buy it from celadon dept store during clear out sale. It'll cost 9800.
Celadon Dept. Store
In a vending machine on the rooftop of the Celadon Dept. Store. They cost 250 to buy and restore 50 HP.
It can be purchased on the fourth floor of the celadon city dept store.