Dropping from any poe currency monster in the Delirium league, these new Jewels are one of the most significant improvements to build customisation since the introduction of Ascendancy Classes.

From the Delirium announcement, it introduced a new type of jewel, Cluster Jewels, along with 280 new notables, which are placed on the Passive Skill Tree to expand the Path and build power characters. When I first glanced at it, it is very clear that the cluster jewel has a strong influence to transform the development of the entire Delirium league.

As its first debut, there are several features with Cluster Jewels to be noted in order to maximize their effects, just like:

Size and Crafting

There are a total of three sizes of Cluster Jewel, Small, Medium and Large, each with a different focus. All of them can be placed in the outermost passive skill tree sockets, also, each jewel can also be placed in a socket made of a large size jewel, that is, medium-sized jewels can be placed in a socket made by a large jewel, while small-size jewels can place in a socket created by a larger or medium jewel, not any socket except the outermost ones can place large cluster jewels.

As for crafting, each jewel of each size is also different in terms of cost.Large Cluster Jewel: 2-3 Notables + 2 sockets，Medium Cluster Jewel: 2 Notables + 1-2 sockets，Small Cluster Jewel: so common to craft easily，Each jewel can have up to two prefixes and two suffixes, choosing your favorite prefix or suffix for your jewels based on these rules:Prefix-A: the lower weight of the two prefixes,Prefix-B: the higher weight of the two,If they are the same weight, it doesn't matter which one.

Suffix: A notable for large jewel, while a passive bonus if medium.For medium and large cluster jewels, there are 2 or 3 notable and at least 1 socket. Starting from item level 1 of notables, as it increases, what we can get from the clusters will become more valuable, for different size jewels, there are also different and suitable items levels of notables.

Large Cluster Jewel: Best Level Item 75, it guarantees that you are able to get 3 notables and 1-2 jewels sockets, the passive effects are already just the way of crafting a good jewel, on the contrary, even though the item level is still increasing, it just adds more mods, but not reduce the nodes to cluster jewels notables

Medium Cluster Jewel: No higher than Level Item 67, it's available to get all the notables and jewel sockets, which also blocks the second and highest tier of small passive effects while saving much time.

Small Cluster Jewel: Just reach Level Item 84 to get 1 notable, reducing the tiers of these mods and the potential of the jewel.

Regarding the item level, all you only really need is the notable, so there is no need to spend more time to improve the level, just choosing the lowest ilvl to meet the requirements.Next, we are discussing about the amount of passive skill the Cluster Jewels add.

For large and medium Cluster Jewels Path of exile currency it is appropriate to choose the lowest amount of passive skills, as the jewel itself and notables also count to those passive skills. With more passive skills increase, this will extend the distance between two sockets and cost more time. In general, a cluster jewel with 2 sockets and 2 notables can reduce 1 passive skill.As for these small cluster jewel, since they are common to get, you can add passive skills at will as the rule, the lowest amount can save more.