Where to find the Lightning Stone in Pokémon Legends: Arceus
When dealing with developments involving the use of specific items, some will be used only once depending on the generality of their application. The exception to that rule is usually Evolution Stones or other items that handle typing because they have a wide variety of Pokémon to which they can apply.
Pokémon Legends: Arceus use all Evolution Stones at least once, with some, like the Thunder Stone, being usable across multiple species that appear in the game.
The item itself can be found in a number of different ways, and you’ll need at least one if you want to evolve your Eevee into a Jolteon. It can also be used on Magneton if you don’t want to wait until late game to evolve it into Magnezone.
The Thunder Stone, along with most of the original Evolution Stones, is a bonus option for completing Flaro’s Eevee Evolution Requirement.
You can actually buy a Thunder Stone at Ginter’s Specials in Jubilife Village for $5,000 Poké. Or if you want to use Bonus points you’ve saved from returning lost bags, you can go to the Trading Station and get one for 1,200 Merit Points.
Thunder Stones can spawn in space-time distortion along with other Evolution Stones and various rare items. And while exploring the map, you can break gray rocks in various areas for a chance to find a rock in the ruins.
https://dotesports.com/pokemon/news/where-to-find-a-thunder-stone-in-pokemon-legends-arceus Where to find the Lightning Stone in Pokémon Legends: Arceus