Fire Gem is an item in the “Jewels” category (Items). It costs ₽200.
In-game descriptions
| Black / White · Black 2 / White 2 | A gem with an essence of fire. When held, it strengthens the power of a Fire-type move only once. |
|---|---|
| X / Y · Sun / Moon · Ultra Sun / Ultra Moon · Let’s Go, Pikachu! / Let’s Go, Eevee! · Sword / Shield | A gem with an essence of fire. When held, it strengthens the power of a Fire-type move one time. |
Where to find it
Not placed on the atlas maps (so far: Red/Blue and Generation 3).
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h