You can only battle Hearthome City's gym leader Fantina after you have defeated Pastoria City's gym leader, Crasher Wake.
The 6th gym leader is in Canalave City.
pastoria city
Maylene isn't a gym leader. lol. actually,maylen is! she is in veilstone city.
You beat the first gym leader, Roark in Oreburgh City.
The seventh gym leader in Pokemon Diamond is located in Snowpoint City. Her specialty is Ice type Pokemon, so make sure and have a powerful Fire type. Good luck!
do you meen zoom lens anyway you get them at hethrome city
The first gym in Pokemon diamond is in Oreburgh City
The 7th leader is Candice in Snowpoint City
hearthome city leader
Pastoria City
orebourgh city
Pastiora
eterna city
The 6th gym leader is in Canalave City.
The 6th Gym Leader on diamond in Byron. Bryon has Steel Pokemon and is located in Canalave City. Canalave City is to the west of Jubilife City.
In Veilstone City
hearthome city leader