Cluster Jewel Calculator
Optimize your Path of Exile passive tree by calculating the efficiency of your cluster jewels.
Enter the total number of passive points allocated *within* the cluster jewel itself.
Enter the number of Notable passives you have allocated.
Enter the number of jewel sockets you have allocated within this cluster.
What is a Cluster Jewel Calculator?
A cluster jewel calculator is an essential tool for Path of Exile players looking to maximize the efficiency of their passive skill tree. Cluster jewels extend the passive tree, but their power comes at the cost of passive points. This calculator helps you determine the ‘cost per benefit’ for your jewel setup, allowing you to quickly see if the points you’ve invested are giving you a worthwhile return in terms of powerful notables and extra jewel sockets. By using a cluster jewel calculator, you can make informed decisions, comparing different jewels or pathing options to find the most powerful and efficient character build.
Cluster Jewel Calculator Formula and Explanation
The calculation for cluster jewel efficiency is straightforward. It measures the number of passive points you spend against the major benefits you receive.
The formula is:
Cost Per Benefit = Total Points Spent / (Notables Gained + Jewel Sockets Gained)
A lower “Cost Per Benefit” value is generally better, as it means you are spending fewer passive points for each major upgrade you unlock on the jewel.
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Total Points Spent | The number of passive skill points allocated on the cluster jewel’s tree. | Points | 2 – 10 |
| Notables Gained | The number of powerful Notable skills taken on the jewel. | Unitless | 1 – 3 |
| Jewel Sockets Gained | The number of additional jewel sockets unlocked on the jewel. | Unitless | 0 – 2 |
Practical Examples
Example 1: Efficient Large Cluster Jewel
You find a Large Cluster Jewel and decide to allocate points to get two powerful notables.
- Inputs:
- Total Points Spent: 5
- Notables Gained: 2
- Jewel Sockets Gained: 0
- Calculation: 5 / (2 + 0) = 2.5
- Result: The cost is 2.5 points per notable, which is a very efficient investment. This is a common scenario evaluated with a cluster jewel calculator. For more info on builds, see these Path of Exile build guides.
Example 2: Balanced Jewel with a Socket
You have a different jewel where you grab one notable and one jewel socket, which you plan to use for a powerful unique jewel.
- Inputs:
- Total Points Spent: 4
- Notables Gained: 1
- Jewel Sockets Gained: 1
- Calculation: 4 / (1 + 1) = 2.0
- Result: The cost is 2.0 points per benefit. This is exceptionally efficient and a great use of passive points.
How to Use This Cluster Jewel Calculator
- Enter Total Points Spent: Count the passive points you have allocated only on the cluster jewel itself. Do not include the point used to socket the jewel on the main tree.
- Enter Notables Gained: Input the number of large, hexagonal “Notable” passives you have taken.
- Enter Jewel Sockets Gained: Input the number of jewel sockets you’ve allocated. This will be 0 for Small Cluster Jewels, and up to 2 for Large ones.
- Review the Results: The calculator instantly shows the ‘Cost Per Benefit’. Use this number to compare different jewels. The chart also provides a visual representation of your investment versus your rewards. For advanced crafting strategies, you might consult advanced PoE tools.
Key Factors That Affect Cluster Jewel Efficiency
The power of a cluster jewel isn’t just about the numbers. Several factors influence its real value in a build:
- Number of Small Passives: A jewel with fewer small passives (e.g., an 8-passive Large Cluster Jewel) is often more desirable because it requires less point travel to reach the notables and sockets.
- The Power of the Notables: Some notables are build-defining, while others are minor upgrades. A high cost per benefit might be acceptable for a game-changing notable.
- Pathing: The layout of the passives on the jewel matters. If the notables you want are on opposite sides, the travel cost will be higher, reducing efficiency. Path of Building is a great tool for planning this.
- Jewel Size (Large, Medium, Small): Large jewels can have up to 2 jewel sockets and 3 notables, offering the highest potential but also the highest cost. Small jewels offer a single, often defensive, notable for a low point investment.
- Added Small Passive Effects: The enchantment on the jewel can make the small travel nodes much more valuable (e.g., adding Attack Speed or resistances), which can offset a higher travel cost. This nuance is something a basic cluster jewel calculator can’t measure but you should consider.
- Synergy with your Build: The ultimate test is how well the jewel’s stats synergize with your character’s primary skills and mechanics. Checking a good Path of Exile build guide can provide context.
Frequently Asked Questions (FAQ)
What is a good “Cost Per Benefit” score?
Generally, a score under 3.0 is considered good to excellent. A score between 3.0 and 4.0 can be acceptable if the notables are very powerful for your build. Anything above 4.0 is often inefficient unless it provides a keystone or notable that is absolutely essential.
Should I include the passive point used to socket the jewel on the main tree?
No, this calculator is designed to measure the efficiency *within* the jewel itself. The cost to socket the jewel is a separate consideration when evaluating your overall tree.
Does this calculator work for Large, Medium, and Small cluster jewels?
Yes, it works for all sizes. For a Small jewel, you will typically enter 1 for “Notables Gained” and 0 for “Jewel Sockets Gained”.
Why are jewels with fewer passive points (e.g., 8 vs 12) often more expensive?
Fewer passive points means less “travel time” to get to the desirable notables and jewel sockets. This increases the jewel’s efficiency, making it more valuable. Efficient pathing is key, and this is why a cluster jewel calculator is so helpful.
How do I count the points spent correctly?
Start from the point where the jewel’s tree begins and count every allocated node (small, medium, and notable) within that cluster.
When should I prioritize a jewel socket over a notable?
Prioritize a jewel socket if you have another very powerful unique or rare jewel to put in it. If the value of that second jewel is greater than a notable, the socket is the better choice.
Does this tool account for the stats from small passives?
No, this is a high-level efficiency calculator. It focuses on the major benefits (notables and sockets). You should manually factor in the value of the small passives (like life, damage, or resistances) when making your final decision. Tools like Craft of Exile can help you understand the value of all mods.
Where can I find good cluster jewels?
You can find them as drops from Delirium encounters or, more commonly, purchase them from other players via the official trade website.