Thunder Stone

Items pocket · buy for $2,100, sells for $1,050 · in-game spelling: Thunderstone

Effect

A peculiar stone that makes certain species of Pokémon evolve. It is shaped like a thunderbolt.

Follow the linked quests for story requirements. A listed source does not always mean you can get the item more than once.

Item balls on the ground

• Power Plant (26 steps east of the door to Route 10)

Gifts from people

• Route 25 Sea Cottage · see Sea Cottage: Bill's grandfather (show him five Pokémon)
• Vermilion Gym · see Vermilion City: after the construction-site clash, Vermilion City: the construction-site dispute (choose a side)
• Vermilion Pokémon Fan Club · see Vermilion City: the Pokémon Fan Club (three members → Bike Voucher)

Prizes and menu choices (you get one of several)

• Route 25 Sea Cottage (one of several; chosen in a menu or by a draw) · see Sea Cottage: Bill's grandfather (show him five Pokémon)

Shops

• Celadon Department Store 2F · $2,100

Other uses

Evolution requirements

• Pikachu → Raichu: use Thunder Stone
• Magneton → Magnezone: use Thunder Stone
• Eevee → Jolteon: use Thunder Stone
• Nosepass → Probopass: use Thunder Stone
• Eelektrik → Eelektross: use Thunder Stone
• Tadbulb → Bellibolt: use Thunder Stone
• Alolan Graveler → Alolan Golem: use Thunder Stone
• Gigantamax Pikachu → Raichu: use Thunder Stone
• Gigantamax Eevee → Jolteon: use Thunder Stone

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