Adamantine Mace
The Adamantine Mace is a rare +1 simple melee weapon crafted at the Adamantine Forge in Baldur's Gate 3. Its special properties make it particularly useful against objects and sturdy obstacles.
Key Takeaways
The Adamantine Mace is a Forge-crafted weapon whose strongest identity is utility against objects rather than broad combat dominance.
Forge-crafted +1 mace
This rare simple melee weapon is made at the Adamantine Forge during The Adamantine Forge quest. Its enchantment bonus and simple-weapon classification make it usable by characters with the appropriate simple-weapon proficiency.
Requires the correct Forge materials
Creating it requires the Adamantine Mace mould and raw Mithral Ore. The weapon therefore depends on finding both the specific mould and ore before the Forge can produce it.
Diamondsbane guarantees object critical hits
Its Diamondsbane property guarantees a critical hit when the mace strikes an object. This makes the weapon particularly suited to breaking sturdy environmental obstacles and structures.
Ignores bludgeoning resistance
Lethal Weapon lets the mace ignore resistance to bludgeoning damage. That is a meaningful combat property, although the weapon's most distinctive use remains its interaction with objects.
A specialized Forge choice
The Adamantine Mace is most useful when a party wants a dependable object-destruction tool without relying on force damage. Its value is consequently more situational than that of a generally applicable weapon effect.
Competes with Adamantine armor rewards
Some players regard the Adamantine armor options as stronger long-term Forge investments. Choosing the mace therefore reflects a preference for its niche utility rather than an automatic upgrade over every alternative reward.
Overview
The Adamantine Mace is a rare +1 simple melee weapon crafted at the Adamantine Forge, distinguished less by ordinary combat output than by its ability to bypass bludgeoning resistance and destroy objects with guaranteed critical hits.
Within Baldur's Gate 3, the Adamantine Mace is a named forge weapon rather than a standard shop item or random enemy drop. Its defining identity comes from the combination of Diamondsbane and Lethal Weapon: attacks against objects are guaranteed critical hits, while its bludgeoning damage ignores resistance. Those properties give the mace a specific mechanical role that is easy to miss if it is assessed only as another one-handed weapon.
Diamondsbane is most relevant when the party needs to break a sturdy object, wall, or other obstruction. The guaranteed critical-hit behavior applies to objects, not as a general promise of automatic critical hits against creatures, so it should not be presented as a universal damage effect. Lethal Weapon remains the more directly creature-facing property, but it does not by itself make the mace a universally superior choice to other magical weapons with stronger offensive or utility effects.
The weapon belongs to the early-game Adamantine Forge progression in the Underdark and requires the appropriate mace mould and mithral ore for its creation. That places it alongside the forge's other possible equipment rewards, making the mould selected by the party part of the item's practical context. The mace is therefore most distinctive when the group values its object-breaking function or wants a bludgeoning weapon that is not checked by resistance, rather than simply because it carries a +1 enchantment.
Its main point of comparison is the rest of the Adamantine equipment made at the forge. Choosing the mace provides a reliable answer to certain environmental obstacles and a resistance-bypassing weapon property, while choosing armor or another forge weapon serves different defensive or combat priorities. It is available in the standard Baldur's Gate 3 experience and is not a separate DLC or alternate-mode variant; its usefulness depends primarily on the party's forge choice and whether its object-focused property solves a current problem.
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Statistics
This game publishes dice damage rather than 0–100 bars, so the verified damage, enchantment, weight and value are listed instead. Taken from the project's verified weapons database, not from generated text.
- Base Damage1d6+1
- Damage TypeBludgeoning
- Enchantment+1
- RarityRare
- Weight1.9 kg
- Value190 gp
- Entry TypeNamed / special
Figures verified against Consolidated Game Weapons Database.
Compared to similar bludgeoning weapons
| Weapon | Base Damage | Damage Type | Enchantment | Weight | Value |
|---|---|---|---|---|---|
| Adamantine Mace | 1d6+1 | Bludgeoning | +1 | 1.9 kg | 190 gp |
| Markoheshkir | 1d6+2 | Bludgeoning | +2 | 1.8 kg | 640 gp |
| Mourning Frost | 1d6+1 | Bludgeoning | +1 | 1.8 kg | 770 gp |
| Staff of Arcane Blessing | 1d6 | Bludgeoning | — | 1.8 kg | 100 gp |
| The Blood of Lathander | 1d6+3 | Bludgeoning | +3 | 1.8 kg | 640 gp |
Damage is the dice expression; weight and value are the game’s own figures. From Consolidated Game Weapons Database.
How to Obtain
- Access to the Underdark and Grymforge during Act 1.
- The Mace Mould from the fixed pickup near the Ancient Forge.
- At least one piece of Mithral Ore from Grymforge.
- Access to and successful use of the Adamantine Forge; defeating Grym is required to complete the forging sequence.
- This is part of the Adamantine Forge quest and has no separate vendor, DLC, or NG+ requirement. The forge's limited Mithral supply makes additional crafts resource-dependent rather than a guaranteed unlimited source.
- 01During Act 1, travel to Grymforge in the Underdark and reach the Ancient Forge. The Mace Mould is a fixed pickup on a table in the forge approach area; it is not sold by a vendor and is not obtained from an enemy or boss drop.
- 02Collect a piece of Mithral Ore from one of the exposed Mithral deposits in Grymforge, then place the Mace Mould in the mould chamber and the Mithral Ore in the crucible at the Adamantine Forge.
- 03Activate the forge to begin the Adamantine Forge encounter and defeat Grym, the forge guardian, when required. After the forging sequence, collect the Adamantine Mace from the forge. The mould and ore route is guaranteed once the required items are obtained, but the forge can produce only as many items as the available Mithral Ore allows.
Availability
Requires Access to the Adamantine Forge, the Adamantine Mace mould, and Mithral Ore; no character ability-score requirement is established for availability.
The weapon is not a vendor-stock item and has no separate DLC, difficulty, or NG+ availability gate. Its availability is tied to the Act 1 Adamantine Forge progression.
Mechanics and Handling
The Adamantine Mace uses the ordinary one-handed mace handling of Baldur’s Gate 3. Its distinctive behaviour does not come from a special attack sequence or alternate stance; it comes from two weapon properties that change how its hits interact with objects and bludgeoning resistance. Against creatures, it otherwise functions as a straightforward mace rather than a weapon with a separate charge, ammunition, or resource system.
Its most important handling distinction is target selection. Diamondsbane is relevant when the mace strikes an object, while Lethal Weapon matters when the target’s bludgeoning resistance would otherwise reduce the hit. Neither property should be read as a general critical-hit effect or as a universal damage multiplier against every enemy.
Diamondsbane and object damage
Diamondsbane guarantees a critical hit whenever the mace strikes an object. This is a target-specific rule: it applies to objects rather than automatically granting critical hits against creatures. In practical play, the property makes the mace a dependable tool for attacking breakable environmental targets, including sturdy obstacles that might otherwise require a different damage approach.
The property does not turn every attack into a critical hit, and it does not by itself establish a bonus against constructs or other creatures merely because they are artificial. Use the target’s classification in the game as the deciding factor. When an obstacle can be attacked directly, the mace’s guaranteed critical interaction is the reason to consider it.
Lethal Weapon against bludgeoning resistance
Lethal Weapon allows the mace to ignore resistance to bludgeoning damage. This is narrower than ignoring all resistances: it does not remove immunity, and it does not affect resistance to another damage type. Its value therefore depends on the target’s actual defensive traits and on the damage type of the attack.
The property is most useful when a bludgeoning attack would normally be reduced by resistance. It does not replace the need to consider the weapon’s enchantment, the wielder’s attack modifiers, or other conditional effects. Against a target without relevant bludgeoning resistance, Lethal Weapon has no special additional interaction.
Mace weapon actions and commitment
As a mace, the Adamantine Mace can use the standard mace weapon action Concussive Smash when that action is available to the wielder. This is a weapon action rather than an Adamantine-specific passive, so the mace’s special identity remains its object and resistance interactions rather than a unique attack animation. The action is most relevant when a chance to disrupt or hinder a target is more valuable than simply making a normal attack.
The mace is a close-range weapon with no ammunition, reload, draw, or return behaviour. It also has no weapon-specific durability or break state that needs to be managed during ordinary play. Its attacks therefore have the normal action and positioning considerations of a one-handed melee weapon: the wielder must be within melee reach, and switching to another weapon can be preferable when a different property or weapon action better matches the encounter.
Practical handling
Keep the Adamantine Mace available when the party expects to destroy environmental objects or face bludgeoning-resistant targets. Its guaranteed critical interaction with objects is most valuable as a reliable utility effect, while Lethal Weapon is conditional on the target’s resistance. Against ordinary creatures with no relevant resistance, it is handled like a conventional mace and may be outperformed by another weapon whose passive directly supports the character’s role.
Strengths, Weaknesses and Best Uses
Strengths
- Diamondsbane guarantees a critical hit when the mace strikes an object, making it a dependable tool for destroying sturdy environmental obstacles rather than relying on ordinary weapon damage.
- Lethal Weapon ignores resistance to bludgeoning damage, so the mace retains its normal bludgeoning damage against resistant targets instead of having that damage reduced.
- As a rare +1 simple melee weapon, it can be used by characters with simple-weapon proficiency without requiring a martial-weapon proficiency investment.
Weaknesses
- Diamondsbane is an object-focused benefit and does not make the mace a general-purpose critical-hit weapon against creatures.
- Its distinctive resistance-bypassing property is limited to bludgeoning resistance; it does not remove other defensive traits or compensate for every kind of creature protection.
- Crafting it requires the Adamantine Mace mould and mithral ore at the Adamantine Forge, creating an opportunity cost against other Adamantine Forge products, including the armour options.
- The weapon's main advantages are specialized, so characters seeking broader creature-focused effects may gain more from another weapon with stronger offensive or utility properties.
Best uses
- Use it when exploring areas where breaking sturdy walls, doors, or other objects is part of the route or problem-solving, especially when force damage is unavailable or undesirable.
- Equip it on a simple-weapon user who wants a practical answer to bludgeoning-resistant targets without relying on a separate weapon property or temporary effect.
- Treat it as a utility sidegrade rather than an automatic primary weapon: its value is highest when object destruction or bludgeoning resistance is relevant to the encounter or location.
Compared With Similar Weapons
| Weapon | Weapon type / damage dice | Enchantment | Distinctive effect or role | Acquisition timing |
|---|---|---|---|---|
| Adamantine Mace | +1 | Diamondsbane guarantees a critical hit against objects; Lethal Weapon ignores resistance to bludgeoning damage. Primarily useful for destroying sturdy objects. | Act 1; crafted at the Adamantine Forge with the Mace Mould and Mithral Ore. | — |
| Mace | No enchantment bonus | A standard mace with no comparable object-breaking properties; a straightforward early-game bludgeoning option. | Generally available during Act 1 through ordinary exploration or vendors, depending on the item instance. | — |
| The Blood of Lathander | +3 | A major offensive and defensive upgrade over a standard mace, with Lathander's Light and access to Sunbeam. It serves a broader combat role than the Adamantine Mace's object-focused utility. | Act 1; obtained in the Rosymorn Monastery and Githyanki Creche sequence. | — |
Used In
- The Adamantine ForgeThis questline leads to the Adamantine Forge, where the Adamantine Mace can be crafted from its matching mould and Mithral Ore.
- Adamantine ForgeThe Underdark forge is the crafting location for the Adamantine Mace.
- Mithral OreRequired raw material for crafting the Adamantine Mace at the Adamantine Forge.
- Mace MouldThe specific mould required to produce the Adamantine Mace at the Adamantine Forge.
Trivia
- The Adamantine Mace’s Diamondsbane property is an object-specific interaction: attacks against objects automatically become critical hits. This makes the weapon relevant for breaking destructible environmental obstacles, rather than merely serving as a conventional bludgeoning weapon.
- Its Lethal Weapon property lets the mace ignore resistance to bludgeoning damage. This is distinct from Diamondsbane: one property affects how the weapon damages objects, while the other affects resistance applied to its bludgeoning attacks.