Catalyst

This page is about the currency. For the divination card, see The Catalyst.

Catalysts are currency items that add quality to jewellery. Quality on jewellery instead improves the effect of the implicit and explicit modifiers of the specified type, depending on the modifier tags. Modifier tags can be viewed by enabling Advanced Mod Descriptions in the UI options, and then holding the Alt key (default, it matches the item highlight keybind) while mousing over the item.

A catalyst will increase the quality of unique/rare items by 1%, magic items by 2%, and white items by 5%, up to a maximum of 20%. Using a different type of catalyst on an item that already has quality will replace the quality type, starting again from 0%.

Catalysts are acquired as rewards from Ultimatum encounters in maps and scale with area item quantity.

In terms of item filter, catalyst are classified as Stackable Currency.

Prior to Version 3.15.0, quality on jewellery also increased the odds of adding a mod of the matching type when using an Orb of AugmentationOrb of AugmentationStack Size: 30Augments a magic item with a new random modifierRight click this item then left click a magic item to apply it. Magic items can have up to two random modifiers. or Regal OrbRegal OrbStack Size: 20Upgrades a magic item to a rare itemRight click this item then left click a magic item to apply it. Current modifiers are retained and a new one is added. or Exalted OrbExalted OrbStack Size: 20Augments a rare item with a new random modifierRight click this item then left click a rare item to apply it. Rare items can have up to six random modifiers. or Elderslayer's Exalted Orb on the item, at the cost of reducing quality (2%, 5% and 20%, respectively). Such a behaviour is deprecated now - catalysts no longer affect the chances of rolling related modifiers on jewellery, and quality on jewellery is no longer removed when crafting.

List of catalysts

Main page: List of catalysts

Item	Drop Level	Stack Size	Tab Stack Size	Effect(s)	Help Text
Abrasive CatalystAbrasive CatalystStack Size: 10Adds quality that enhances Attack modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Attack modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.
Accelerating CatalystAccelerating CatalystStack Size: 10Adds quality that enhances Speed modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Speed modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.
Fertile CatalystFertile CatalystStack Size: 10Adds quality that enhances Life and Mana modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Life and Mana modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.
Imbued CatalystImbued CatalystStack Size: 10Adds quality that enhances Caster modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Caster modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.
Intrinsic CatalystIntrinsic CatalystStack Size: 10Adds quality that enhances Attribute modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Attribute modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.
Noxious CatalystNoxious CatalystStack Size: 10Adds quality that enhances Physical and Chaos Damage modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Physical and Chaos Damage modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.
Prismatic CatalystPrismatic CatalystStack Size: 10Adds quality that enhances Resistance modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Resistance modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.
Tainted CatalystTainted CatalystStack Size: 10Applies a random quality type and amount of quality to a Corrupted ring, amulet or belt Replaces other quality typesRight click this item then left click a Corrupted ring, amulet or belt to apply it. The maximum quality is 20%.	1	10	5000	Applies a random quality type and amount of quality to a Corrupted ring, amulet or belt Replaces other quality types	Right click this item then left click a Corrupted ring, amulet or belt to apply it. The maximum quality is 20%.
Tempering CatalystTempering CatalystStack Size: 10Adds quality that enhances Defence modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Defence modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.
Turbulent CatalystTurbulent CatalystStack Size: 10Adds quality that enhances Elemental Damage modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Elemental Damage modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.
Unstable CatalystUnstable CatalystStack Size: 10Adds quality that enhances Critical modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.	1	10	5000	Adds quality that enhances Critical modifiers on a ring, amulet or belt Replaces other quality types	Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%.

Vendor recipe

Result	Recipes	Notes
1x random Catalyst	3x Catalysts, all of same type	Cannot return a Tainted CatalystTainted CatalystStack Size: 10Applies a random quality type and amount of quality to a Corrupted ring, amulet or belt Replaces other quality typesRight click this item then left click a Corrupted ring, amulet or belt to apply it. The maximum quality is 20%.
1x Catalyst	20% quality normal jewellery
1x Catalyst	Jewellery with a total of at least 40% of the same quality type

Version history

Version	Changes
3.23.0	Added a new Tainted CatalystTainted CatalystStack Size: 10Applies a random quality type and amount of quality to a Corrupted ring, amulet or belt Replaces other quality typesRight click this item then left click a Corrupted ring, amulet or belt to apply it. The maximum quality is 20%. that can be obtained from the Trialmaster. It applies a random quality type and amount of quality to a Corrupted Ring, Amulet or Belt, and replaces other quality types. Catalysts are now rewards from Ultimatum, and are affected by Map Item Quantity. Metamorph rewards (Catalysts) from Heist, Expedition, Betrayal, Delirium, Legion, and Eldritch Altars have been replaced with Ultimatum rewards (Catalysts or Inscribed Ultimatums). Catalysts are no longer offered as Ritual or Delirium. Mysterious Incubators can no longer drop catalysts. Existing Amorphous Delirium Orbs will be replaced with Challenging Delirium Orbs, which add layers of Delirium with the Ultimatum Item rewards type to Maps. This is the only source of Challenging Delirium Orbs, these are unobtainable as item drops or from any other source. Existing Morphing Incubators will be replaced with Challenging Incubators, which can be added to an equippable item, dropping an Ultimatum Item after killing a certain amount of Monsters. This is the only source of Challenging Incubators, these are unobtainable as item drops or from any other source. Expedition Remnant modifiers in Expedition sites that grant Runic Monsters and Chests a chance to drop Catalysts have been replaced with modifiers that drop Heist Contracts instead. Reduced the amount of Catalysts obtained from Heist Chests, Expedition Chests, Betrayal Chests, and Vaal Unique Strongboxes, as well as the amount of Catalysts offered by Tujen.
3.15.0	Catalysts no longer affect the chances of rolling related modifiers on jewellery through crafting, and Quality on jewellery is no longer removed when crafting with specific Currency.
3.14.0	Added an Accelerating CatalystAccelerating CatalystStack Size: 10Adds quality that enhances Speed modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%., which adds quality that enhances Speed modifiers on a Ring, Amulet or Belt. Added a Noxious CatalystNoxious CatalystStack Size: 10Adds quality that enhances Physical and Chaos Damage modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%., which adds quality that enhances Physical and Chaos Damage modifiers on a Ring, Amulet or Belt. Added an Unstable CatalystUnstable CatalystStack Size: 10Adds quality that enhances Critical modifiers on a ring, amulet or belt Replaces other quality typesRight click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower-rarity jewellery. The maximum quality is 20%., which adds quality that enhances Critical modifiers on a Ring, Amulet or Belt.
3.9.0	Introduced to the game