route 38
You get it from lass Dana route 38, Mystery gift, or on route 25.
get lass dana's number and she will say she has something for you
One is given to you by Bill's Grandfather on Route 25 when you show him a Pichu. The other is given by Lass Dana on Route 38 after you defeat her in a rematch. I suspect there are only these two in the game as only two Pokemon evolve via Thunder Stone in Pokemon Crystal: Pikachu and Eevee.
She should be on route 38
After you battle and beat the gym
You get it from lass Dana route 38, Mystery gift, or on route 25.
get lass dana's number and she will say she has something for you
One is given to you by Bill's Grandfather on Route 25 when you show him a Pichu. The other is given by Lass Dana on Route 38 after you defeat her in a rematch. I suspect there are only these two in the game as only two Pokemon evolve via Thunder Stone in Pokemon Crystal: Pikachu and Eevee.
Bill's grandfather, Lass Dana (Route 38), Bug-Catching Contest first prize, Pokéathlon Dome(Wednesday, Thursday, Saturday, Price: 2500 Athlete Points)
She should be on route 38
In the game "Lass Dana," the time it takes for her to give you a stone can vary depending on specific game mechanics and events. Generally, players may need to wait for a certain in-game period or complete specific tasks to receive items. For the most accurate information, it's best to consult game guides or community forums.
You can get a Thunderstone from Bill's grandpa, Lass Dana (she's on Route 38,) and the Pokeathalon Dome. You can also win it as a prize from the Bug Catching Contest.
After you battle and beat the gym
Go to Ecruteak city. From there, start on your way to Olivine. If you stick to the upper route, you will see a girl. She is Lass Dana. Take her phone number, and she will give you a Thunder Stone after some time. Be patient! You can get Fire Stones from Schoolboy Alan who is near where the Sudowoodo used to be. Take his phone number.
Show Bill's grandfather the Pokemon he wants to see, get Lass Dana phone number, and she could find one, she is on Route 38, one of the stones that can be won in the Bug-Catching Contest by placing first, or winning the Pokéathlon Dome on Wednesday, Thursday, or Saturday.
well it doesnt really matter how much times it just get to it at some point so if i were you go home to your mom (in the game) and talk to her not about the money but when it says do you want to switch to daylight saving time keep doing it because an hour passes by and some one calls you so keep doing untill dana calls about the thunder stone. hope this helped!
battle lass "Dana" to get her phone number, after waiting a while (2 gym's or just alot of walking and training) she will call you and give you a thunderstone after talking to her again (in front of her)