How to Get Adamantine Splint Armour in Baldur’s Gate 3

In Baldur’s Gate 3, Adamantine Splint Armour is a craftable heavy chest piece, and you can get it from Adamantine Forge in Act 1 – this short Guide Explains everything you need to know about The Adamantine Splint Armour in BG3.

Adamantine Splint Armour BG3

Adamantine Splint Armour

In Baldur’s Gate 3, The Adamantine Splint Armour has a high Armor Class (AC) of 18, immunity to critical hits, the beneficial Reeling status effect, and a solid 2-point damage reduction. It’s a must-have item in Act 1, especially if you play as a Fighter, Paladin, or one of the Cleric subclasses (Life, Nature, Tempest, and War). The AC it offers can carry you through even to Act 3, reducing the need for frequent armor upgrades. However, it has a limitation—it’s best suited for specific classes and subclasses or may require a feat to gain proficiency in heavy armor.

For main characters who are Paladins or Fighters, using your Mithral ore for crafting this armor is highly recommended. As you progress into Act 3, consider upgrading your armor, first with the Armour of Persistence and later with the Helldusk Armor. You can equip it to your character’s chest slot in the inventory. The user needs Heavy Armour proficiency or suffers penalties while wearing the armour. You can equip it on any class, companion, or character with Heavy Armour proficiency.

The Adamantine Splint Armour features in BG3:

  • Armour Type: Heavy Armour
  • Armour Class: 18 AC
  • Requirements: Heavy Armour proficiency
  • Rarity: Very Rare
  • Weight: 19 kg
  • Value: 3 800
  • Location: Crafted in Adamantine Forge, Grymforge, Act 1 – Requires Mithral Ore and Splint Armour Mould.
  • Unique Feature 1: Disadvantage on Stealth Checks.
  • Unique Feature 2: Attackers can’t land Critical Hits on the wearer.
  • Unique Feature 3: Intense Adamantine Backlash: When a melee attack hits you, the attacker is sent Reeling for 3 turns.
  • Unique Feature 4: Magical Plate: All incoming damage is reduced by 2. (No AC bonus from Dexterity)
  • Classes with Heavy Armour proficiency: Fighter, Paladin, Cleric, and Ranger.
  • Companions Who Can Use This Armour: Lae’zel, Minthara, Minsc, Shadowheart

How to Get Adamantine Splint Armour in Baldur’s Gate 3

To get the Adamantine Splint Armour in Baldur’s Gate 3, craft it in Adamantine Forge, located in Grymforge, during Act 2. You must find Mithral Ore and Splint Armour Mould and defeat Grym first.

Where to find All Adamantine Forge Moulds Bg3 Baldur's Gate 3

The following list explains all the steps to get and craft Adamantine Splint Armour in BG3:

  1. Arrive at Grymforge during Act 1
  2. Find Splint Armour Mould inside the Ancient Forge on the floor (X -597 Y: 309)
  3. Gather Mithral Ore from one of two available ore veins.
  4. Find legendary Adamantine Forge.
  5. Insert Mithral ore into the Crucible.
  6. Insert Splint Armour Mould to Mould Chamber
  7. Pull the forge lever to lower the platform.
  8. Release Lava valve
  9. The construct guarding the forge will appear, and you need to defeat him.
  10. The best strategy is to debuff Grym by luring him into lava, then to the crucible and smack with a crucible piston by pulling the lever.
  11. After the fight, recheck the forge. Your crafted Adamantine Splint Armour should be lying next to the mould chamber.
  12. Get the Adamantine Splint Armour and enjoy your new medium armour!

There are six craftable adamantine gear pieces to craft, but only two Mithral ore (check the locations on the map above). First, you can find Mithral ore northwest of the ruined staircase that leads straight to the Adamantine Forge. The second location is to the east, where you’ll need to make a jump over the lava and be careful not to step inside to collect it. Simply destroy the more veins to obtain it.

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