 | Key Stone |
| Sprites | Item Type | Japanese Name | Price | |||||
|
Key Item | キーストーン Key Stone |
|
| Attainable In | |||||||||||||
| RGBY | GS | C | RS | E | FRLG | DP | Pt | HG | SS | B | W | B2 | W2 |
| X | Y | ΩR | αS | S | M | US | UM | LGP | LGE | SW | SH | BDSP | PLA |
 Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
SV | Z-A | ||||||
| In-Depth Effect |
| This item is given by Dexio and allows for Mega Evolution |
| Flavour Text | ||||||
| Omega Ruby | Alpha Sapphire | |||||
| Sun | Moon | A stone filled with an unexplained power. It makes Pokémon that battle with a Mega Stone Mega Evolve. | ||||
| Ultra Sun | Ultra Moon | A stone filled with an unexplained power. It makes Pokémon that battle with a Mega Stone Mega Evolve. | ||||
| Let's Go, Pikachu! | Let's Go, Eevee! | A stone filled with an unexplained power. It reacts to Mega Stones and makes Pokémon Mega Evolve. | ||||
| Sword | Shield | A stone filled with an unexplained power. It makes Pokémon that battle with a Mega Stone Mega Evolve. | ||||
| Brilliant Diamond | Shining Pearl | A stone filled with an unexplained power. It makes Pokémon that battle with a Mega Stone Mega Evolve. | ||||
| Scarlet | Violet | A stone filled with an unexplained power. It makes Pokémon that battle with a Mega Stone Mega Evolve. | ||||
| Locations | ||||||
| Sun | Moon | Ancient Poni Path | ||||
| Ultra Sun | Ultra Moon | Poni Plains | ||||
| Let's Go, Pikachu! | Let's Go, Eevee! | Pallet Town | ||||