The eighth badge in Viridian City. The gym leader is Giovanni. In order to enter the gym you have to have all seven badges, and have beaten Giovanni at Silph Co. and Rocket Game Corner.
Head back to Viridian City and challenge the gym there (it will be open now) to get your 8th badge. After that come the Pokemon league.
You can obtain the 8th gym badge (the earth badge) in fire red from Giovanni in Viridian City.
Get the Thunder Badge And Talk To Jenny And She Will Give You One
Strength will activate when you get the RainbowBadge.
in Viridian city. the one that was locked.
The 8th Badge in Pokemon Diamond is called The Beacon Badge.
It's erika the grass type user. the badge is the rainbow badge
Head back to Viridian City and challenge the gym there (it will be open now) to get your 8th badge. After that come the Pokemon league.
The sixth badgeno actually it the third badge
== == You get the 8th gym badge in Sunyshore City. Hope this helps
Erica in Celadon City.
Sunnyshore City Gym: Electric (beacon badge from Volkner)
after you get the thunder badge talk to officer jenny
Go to celadon city.
you beat the gym leader
Get the 8th Gym Badge.
You can obtain the 8th gym badge (the earth badge) in fire red from Giovanni in Viridian City.