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Jewel
Jewels are items that can be placed into allocated jewel sockets in the passive skill tree, and can be removed or replaced at no cost. They grant certain buffs and abilities. Like most other items, jewels can be modified by orbs and are available in the four rarities. A rare jewel can have only four affixes instead of six.
It is possible to have a jewel in an unallocated slot. Jewels in unallocated slots have no effect [1].
Some unique jewels affect other passive nodes within a certain radius.
Abyss jewels are special types of jewels that can be socketed into jewel sockets as well as abyssal socket in items. Cluster jewels can only be socketed in the outermost jewel sockets and adds a passive skill cluster to the passive tree.
Base Jewels
There are three base jewel types. They don't differ in implicit modifiers or level requirement, but rather in the pool of modifiers that can spawn on them. Jewels can be found starting at item level 20, and used at any level.
Cobalt JewelCobalt JewelPlace into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
Crimson JewelCrimson JewelPlace into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
Viridian JewelViridian JewelPlace into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
Only magic, rare, and unique jewels can be found in loot. Normal jewels can be obtained by using an 
Orb of ScouringOrb of ScouringStack Size: 30Removes all modifiers from an itemRight click this item then left click on a magic or rare item to apply it.
Shift click to unstack.
.
There is a fourth base type, 
Prismatic JewelPrismatic JewelPlace into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
, which non-unique versions cannot be found. See its page for more information.
Cluster Jewels
Cluster jewels can be found in Delirium encounters. Cluster jewels can only be socketed in the jewel sockets located at the outerpost part of the passive skill tree. They add a passive skill cluster to the passive tree when socketed. They have modifiers that determine how many and what skills are in the cluster. Larger cluster jewels can have jewel sockets, which can support smaller cluster jewels or any other types of jewels.
Small Cluster JewelSmall Cluster JewelPlace into an allocated Small, Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Medium Cluster JewelMedium Cluster JewelPlace into an allocated Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Large Cluster JewelLarge Cluster JewelPlace into an allocated Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Abyss Jewels
Abyss jewels can be found as drops from an Abyss. They behave mostly like jewels, except that they can also be socketed into equipment with abyssal sockets. Abyss jewels have different modifiers it can roll from regular jewels.
Ghastly Eye JewelGhastly Eye JewelPlace into an Abyssal Socket on an Item or into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
Hypnotic Eye JewelHypnotic Eye JewelPlace into an Abyssal Socket on an Item or into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
Murderous Eye JewelMurderous Eye JewelPlace into an Abyssal Socket on an Item or into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
Searching Eye JewelSearching Eye JewelPlace into an Abyssal Socket on an Item or into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
Unlike regular jewels, abyss jewel mods are item level dependent.
Unique Jewels
There are several unique jewels. Some are given as quest rewards, some are dropped and others can be only be gained through corrupting jewels.
Radius
Some unique jewels may come with a radius in which a specific effect occurs. The radius modifier represents the following internal values:
| Size | Value |
|---|---|
| Small | 800 |
| Medium | 1200 |
| Large | 1500 |
NOTE: The passive skill nodes within the effective radius of a Threshold jewel do not have to be allocated to be counted as a stat required for the jewel. The stat requirement simply limits which jewel sockets can be used effectively.
Corrupted
The corrupted property can have the following effects on a jewel:
- Turn into a rare jewel
- Turn into a Vaal-exclusive unique jewel with the same base item (see: list of unique jewels received by corruption)
- Add an implicit modifier to the jewel
- No effect (other than adding the corrupted property)
Affixes
Basic jewels
Affixes for basic jewels follow some special rules:
- No item level requirement
- No tiered affixes
- Rare items can only roll 4 affixes, 2 prefixes and 2 suffixes each
Prefixes
List of prefix modifiers that can spawn on Jewels. Modifiers from the same group can not spawn together.
No results found
Suffixes
List of suffix modifiers that can spawn on Jewels. Modifiers from the same group can not spawn together.
No results found
Corrupted mods
List of corrupted modifiers that can spawn on Jewels. Modifiers from the same group can not spawn together.
No results found
Implicit mods
Implicit mod can be added by harvest crafting
No results found
Abyss jewels
Cluster jewels
References
- ↑ Using the full respec granted by update, I removed all skills, leaving jewels in slots. Those supposed to increase attributes (easy to verify) didn't do so.