Everstone is an item in the “Training” category (Items). It costs ₽3000.
In-game descriptions
| Ruby / Sapphire | A wondrous stone & a hold item that prevents evolution. |
|---|---|
| Emerald | A wondrous hold item that prevents evolution. |
| FireRed / LeafGreen | An item to be held by a POKéMON. The holding POKéMON is prevented from evolving. |
| Diamond / Pearl · Platinum · HeartGold / SoulSilver · Black / White · Black 2 / White 2 | An item to be held by a Pokémon. The Pokémon holding this peculiar stone is prevented from evolving. |
| X / Y · Sun / Moon · Ultra Sun / Ultra Moon · Let’s Go, Pikachu! / Let’s Go, Eevee! · Sword / Shield | An item to be held by a Pokémon. A Pokémon holding this peculiar stone is prevented from evolving. |
Where to find it
| Place | Games | How | Tile |
|---|---|---|---|
| Granite Cave — B2F | RuSa | hidden | 28, 6 |
| Granite Cave — B2F | RuSa | hidden | 15, 11 |
| Granite Cave — B2F | E | hidden | 28, 6 |
| Granite Cave — B2F | E | hidden | 15, 11 |
Held by wild Pokémon (Generation 3)
Common: 50% · rare: 5% (60% / 20% with Compound Eyes in the lead), from SetWildMonHeldItem.
| Rare |  Geodude  Graveler  Golem |
|---|
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h