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.

In Baldur’s Gate 3, armor plays a vital role in keeping your character alive during the perilous battles that await throughout the game. Among the many types of armor, the Adamantine Splint Armour stands out for its incredible defensive properties, offering unparalleled protection against physical damage. This durable, heavy armor not only provides a significant boost to your survivability but also grants an extra layer of resilience in the heat of combat. In this guide, we’ll explore the Adamantine Splint Armour, how to acquire it, and tips for using it effectively in Baldur’s Gate 3.
What is Adamantine Splint Armour in BG3?

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. The only downside to wearing this armour is that it will inflict a Disadvantage on Stealth Checks. However, because it is not a gear piece you should be equipping to stealth characters like Rogues and Rangers this shouldn’t be too much of an issue.
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Adamantine Splint Armour Abilities and Effects
Below are all the features, abilities, and effects of the Adamantine Splint Armour in Baldur’s Gate 3:
- 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 the Adamantine Splint Armour in BG3? Explained
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.

The following list explains all the steps to get and craft Adamantine Splint Armour in BG3:
- Arrive at Grymforge during Act 1
- Find Splint Armour Mould inside the Ancient Forge on the floor (X -597 Y: 309)
- Gather Mithral Ore from one of two available ore veins.
- Find legendary Adamantine Forge.
- Insert Mithral ore into the Crucible.
- Insert Splint Armour Mould to Mould Chamber
- Pull the forge lever to lower the platform.
- Release Lava valve
- The construct guarding the forge will appear, and you need to defeat him.
- 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.
- After the fight, recheck the forge. Your crafted Adamantine Splint Armour should be lying next to the mould chamber.
- 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.
How to Use the Adamantine Splint Armour in BG3?
The Adamnatine Splint Armour in Baldur’s Gate 3 is 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.
Tips and Tricks of Adamantine Splint Armour in BG3
These are the best tips and tricks for finding and using Adamantine Splint Armour in Baldur’s Gate 3:
- You can only craft two items using two pieces of Mithral Ore and Moulds at the Adamatine Forge. Choose wisely based on your character’s class and/or that of the party members you travel with most often.
- The Splint Mould for crafting the Adamatine Splint Armour is found near the Ancient Forge Waypoint. Look for it sitting on a rock ledge above lava pools.
- Before you can craft anything in the Adamantine Forge you must first defeat the Grym construct. Use the lever to flood the surface with lava, position the Grym underneath the forge hammer, and then pull the lever to crush the machine.
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FAQs about Adamantine Splint Armour in BG3
Where can I find Adamantine Splint Armour in Baldur’s Gate 3?
You can find the Adamantine Splint Armour by using Mithral Ore and the Splint Armour Mould at the Adamantine Forge in the Grymforge during Act 1 of Baldur’s Gate 3.
Which classes or builds benefit most from Adamantine Splint Armour?
Fighters, Paladins, and Clercis are the three classes that would benefit most from using the Adamatine Splint Armour in Baldur’s Gate 3.
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