Cobalt

Cobalt may refer to:
 * , an ore made into Cobalt Bars that appears after the Wall of Flesh's defeat
 * , a bar made from Cobalt Ore
 * , an armor set created with Cobalt Bars
 * , an armor set dropped by Hornets and Man Eaters
 * , an accessory that grants immunity to knockback
 * , a building brick made with Cobalt Ore
 * , a wall made of Cobalt Brick

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