the fifth gym on Pokemon diamond is the one in herthome city,
The Hearthome City gym is a Ghost-type gym which is the 5th gym in Diamond and Pearl and the 3rd gym in Platinum. The gym leader is Fantina, who uses a Drifblim, Gengar, and Mismagius in Diamond and Pearl and a Duskull, Haunter, and Mismagius in Platinum. Defeating her gets you the Relic Badge.
The 7th gym. Which is in snowpoint city.
Defeat Snowpoint Gym
You have to beat the gym leader gardenia then cut the trees in the top of the town beat every trainer and võilá you can get a bike
The first gym in Pokemon diamond is in Oreburgh City
the fifth gym on Pokemon diamond is the one in herthome city,
the fith gym is a sychic gym its in heathrome city
The 6 gym leader in at Canalave City. the gym after the hearthome City gym!!!!!
hearthome gym. you know where that is.
you beat the gym leader
He is in the lighthouse
the sixth gym is in canalave city
water
The seventh gym in Pokemon Diamond, Pearl, and Platinum is located in Snowpoint City, which is to the East of Lake Acuity.
The Pokémon the second Gym Leader has in "Diamond" are Cherubi, Turtwig and Roserade.
The Hearthome City gym is a Ghost-type gym which is the 5th gym in Diamond and Pearl and the 3rd gym in Platinum. The gym leader is Fantina, who uses a Drifblim, Gengar, and Mismagius in Diamond and Pearl and a Duskull, Haunter, and Mismagius in Platinum. Defeating her gets you the Relic Badge.