Fire Stone/Manga

The Electric Tale of Pikachu
The focus of the chapter To Evolve or Not to Evolve, That Is the Question! was evolutionary stones, including the Fire Stone.

In The Kindest Tentacruel, the Pokémon Fan Club Chairman told about a legend of an underwater dome at the bottom of  Harbor, housing a set of evolutionary stones which, unlike normal stones, did not disappear after making a Pokémon evolve, allowing them to be used repeatedly. The cause of Red's Poliwhirl's evolution had been one of these said stones, proving the legend to be true. Yellow was later led to the dome by a wild, finding a Leaf Stone in it, but the Fire, Thunder, and Water Stones were missing. Later, it was revealed that had given them to  so he could freely evolve and devolve his Eevee.

In Triple Threat, Cilan, Chili, and Cress used a Leaf Stone, Fire Stone, and Water Stone to evolve their, , and into , , and , respectively, during their battle against the Shadow Triad.

A Fire Stone appeared in Final Battle: Versus The Salon Maiden, where received one from Rald. He used it on his, evolving it into.