How tpo get fire stone in soulsliver?

In "SoulSilver," you can obtain a Fire Stone by exploring specific locations or defeating certain trainers. One reliable way is to find it in the Burned Tower in Ecruteak City. Additionally, you can receive a Fire Stone from a trainer in the Celadon Department Store after obtaining the Coin Case. You can also occasionally find them in the underground tunnels or through certain in-game events.