Cobalt Bar

Cobalt Bars are crafted from 3 Cobalt Ore. It is the first tier of the three hardmode ores that the player is able to obtain. Cobalt equipment, as the name would suggest, is colored deep blue. Certain items in the set have a distinctly Japanese theme, the spear being a naginata and the headgear variations resembling Japanese headdresses. To craft all Cobalt equipment, the player needs to acquire 170 bars, or a total of 510 ore.

Trivia

 * In the real world, cobalt is actually a gray, poisonous metal, though it is often used to color glass and other objects a deep blue.