Path of Exile 2 is packed with powerful unique items that can elevate builds to new heights, and the Prism of Belief Diamond is one of the most valuable jewels in the game. While many endgame builds rely on small but significant upgrades, the right unique item can provide a massive boost in power.

Acquiring the Prism of Belief Diamond is no easy feat—it requires skill, patience, and a bit of luck. However, once obtained, this powerful jewel can significantly enhance a character's abilities, making it a must-have for many players looking to optimize their builds. If you're prepared to face a tough challenge, this guide will walk you through everything you need to know about obtaining and using the Prism of Belief Diamond in Path of Exile 2.

How to Obtain the Prism of Belief Diamond

The Prism of Belief Diamond can only be obtained by defeating The Arbiter of Ash on Difficulty 4, the hardest difficulty available. This boss fight is no joke, and players will need to prepare thoroughly to stand a chance.

Key Details About the Arbiter of Ash Fight:

    Required Boss Kills: To unlock Difficulty 4, you must defeat the Arbiter of Ash three times on lower difficulties first.

    Drop Rate: The Prism of Belief Diamond has only a 20% drop chance, meaning multiple attempts will likely be needed.

    Boss Resistances: The Arbiter of Ash has high resistance to Fire, Lightning, and Ice, making elemental builds less effective without debuffs.

    Damage Types: The boss primarily deals Physical and Fire damage, so stacking defenses against these elements is highly recommended.

Since farming this boss can take time, some players turn to POE 2 currency to trade for gear, resistance potions, or additional map materials to make the process easier. Investing in the right items can speed up your farming runs and increase your chances of obtaining the Prism of Belief faster.

Preparing for the Arbiter of Ash Fight on Difficulty 4

1. Optimize Your Build for the Fight

Given the Arbiter of Ash's resistances, builds that rely on pure elemental damage may struggle. Instead, consider:

    Using Physical or Chaos damage to bypass his resistances.

    Bringing Fire resistance gear to counter his Fire-based attacks.

    Equipping debuffs or penetration effects to reduce his elemental resistances if you're running an elemental build.

2. Farming Maps Efficiently

To reach Difficulty 4, you'll need to run maps repeatedly to fight the Arbiter multiple times. During these runs, keep an eye out for:

    Ritual Altars, which can drop Omens—high-value trade items in Path of Exile 2's currency system.

    Currency drops, which can be used to buy better gear and improve your chances in the fight.

Utilizing POE 2 currency wisely can speed up the map grind, allowing players to invest in better weapons, resist gear, and skill-enhancing items.

3. Assemble the Right Gear

Since the Prism of Belief Diamond requires a difficult boss kill, coming prepared is crucial. Consider farming high-value POE 2 currency to trade for:

    Fire resistance gear to counter the Arbiter's damage.

    Health and defense-boosting items to increase survivability.

    Skill-enhancing items to maximize damage output.

How to Use the Prism of Belief Diamond

Once acquired, using the Prism of Belief Diamond is simple—it functions like any other jewel in Path of Exile 2. Players just need to:

    Find an open jewel socket in their skill tree.

    Insert the Prism of Belief Diamond to activate its effects.

Maximizing the Effect of the Prism of Belief

The Prism of Belief Diamond is an extremely powerful jewel because it raises the level of a random skill. The possible effects range from:

    +1 to skill level (minimum)

    +3 to skill level (maximum)

However, since the skill enhancement is random, players will need multiple Prism of Belief Diamonds to get the perfect roll. This means more grinding and potentially trading with other players using POE 2 currency to acquire better rolls.

If you're building a Sorceress or other caster class, stacking multiple +3 skill increases can lead to absurd damage numbers. Alternatively, spreading the boosts across multiple skills can enhance versatility. Regardless of your playstyle, the Prism of Belief Diamond can take any build to the next level.

Why Farming POE 2 Currency Helps with the Prism of Belief Diamond

Grinding for the Prism of Belief Diamond can be time-consuming, so many players turn to POE 2 currency to optimize the process.

How POE2 Currency Can Help:

    Buying better gear to make the Arbiter of Ash fight easier.

    Trading for Omens or other valuable crafting materials.

    Purchasing already-rolled Prism of Belief Diamonds if you don't want to farm endlessly for the perfect skill boost.

Since Path of Exile 2 features an active trading economy, players can use POE 2 currency to gain an edge instead of relying solely on RNG.

Final Thoughts

Absolutely. While grinding for this unique jewel is a serious challenge, the power boost it provides makes it a game-changer. Whether you're looking to maximize a single skill or spread boosts across multiple abilities, this jewel is one of the strongest in POE 2.

To make the journey easier:

    Optimize your build to counter the Arbiter of Ash.

    Farm POE 2 Currency to acquire needed items faster.

    Trade smartly to get the best rolls without excessive grinding.

With dedication, strategy, and the right resources, the Prism of Belief Diamond can push your build to new heights in Path of Exile 2.

MMOexp POE 2 Team