Canalave City on the far west of the map.
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.
the fifth gym on Pokemon diamond is the one in herthome city,
The first gym in Pokemon diamond is in Oreburgh City
The Canalave City Gym is the 6th gym. To get there, you must Surf west from Jubilife City. Get HM03 Surf in Celestic Town.
You will be able to use HM04 Strength outside of battle after you defeat the 6th gym which is in Canalave City.
the 6th gym is in canalacve city
the sixth gym is in canalave city
The 6th gym leader is in Fortree City.
sownpiont city
Veilstone City.
The 6th gym is in Saffron City the gym leader is Sabrina she uses Psychic type pokemon.