This ore is obtained from other ore nodes, in fact, the best way to obtain it is from silver ore nodes, which are frequently found in the Sokelo Canyon of the desert area.
From here you will have to go to the Rainbow Canyon.
You will be able to find plenty of silver ore nodes along the edges of the area. Make sure you farm as much as you can, as being a rare ore, you will need to farm quite a bit and silver as well.
This is all you need to know about where to find cobalt in Summoners War Chronicles, so we hope we have been as helpful as possible, so that you can get a lot out of this mineral now that you know where to find it.