Pokémon Brilliant Diamond and Shining Pearl offer a profusion of evolutionary items like Thunder Stone that players can use to evolve a particular Pokémon. The Thunder Stone, in particular, is used to evolve Pikachu into Eevee.
With that in mind, we have prepared a handy guide that talks about where to find the Thunder Stone in Pokémon Brilliant Diamond and Shining Pearl.
Where to Find the Thunder Stone
In Pokémon Brilliant Diamond and Shining Pearl, you can find the Thunder Stone evolutionary item in the Grand Underground and Sunnyshore City.
In the Grand Underground, you have to use an Explorer’s Kit to dig underground till you locate a Thunderstone embedded on the wall.
If, that sounds like a big task. You can head to Sunnyshore City and navigate towards the west of the Pokémon center. Follow the large white stairs till you reach the eastern side where you find a Sailor and more stairs.
Once you reach the said location, head down the stairs, and you will find yourself a Thunder Stone.
Pokémon Brilliant Diamond and Shining Pearl are currently available on the Nintendo Switch platform.