Back to Items 
Effect / Mechanics
Magma is sealed inside.
Source: PokeAPI
In-game description
"A stone formed by boulders melting in intensely hot magma, then hardening. Magma remains sealed inside it."
Magma is sealed inside.
Source: PokeAPI
"A stone formed by boulders melting in intensely hot magma, then hardening. Magma remains sealed inside it."