| Cobalt Shield
|| Accessory – Crafting material
| Max stack
|| Grants immunity to knockback
The Cobalt Shield is an accessory that grants the player immunity from knockback when equipped. It also provides 1 defense, which stacks with defense from Obsidian Skulls and Shackles. It is obtained from Gold Chests found in Dungeons.
 Used in
- The protection against knockback is particularly valuable when the player is likely to come into frequent contact with enemies and environmental hazards, including but not limited to: lava in the Underworld, Bats in the Underground, and map-generated traps in the Cavern and Dungeon.
- The knockback immunity is also of particular use when the player is on the move. For instance, farming for Fallen Stars while equipping the Hermes Boots will allow no speed interruptions caused by damage, and traversing through a chasm will prevent deadly fall damage from possible knockback caused by contact from the commonly encountered Eater of Souls.
- Even though it has the word "Cobalt" in it, it cannot be crafted from Cobalt Ore and can be obtained before hardmode.
- It appears to have a cross similar to the one on the Cross Necklace.
- 1.2.3: Now has a 0.05 percent chance of being found in Underground cabins.
- 1.1: Can now be combined with the Obsidian Skull to form the Obsidian Shield.
- 1.0.6: Reduced the armor bonus from 2 to 1.
- Pre-Release: Introduced.