A peculiar stone that makes certain species of Pokémon evolve.
It has a leaf pattern.
This item did not appear in any previous games.
The Leaf Stone is a special elemental stone, introduced in Generation I which, when used on certain Pokémon, evolves them. It is an elliptical-shape stone that is brown and has a leaf on it. It can only make certain Grass type Pokémon evolve.