Tempering Catalyst is a type of catalyst in Path of Exile that can be used to enhance the Defence modifiers on rings, amulets, and belts, it's kind of a POE currency for sale on Aoeah.com. It adds quality to these items, which increases the effectiveness of their Defence modifiers. The maximum quality that can be added is 20%.
To use a Tempering Catalyst, you need to right-click on the catalyst and then left-click on the ring, amulet, or belt you want to apply it to. It's important to note that the effect of the catalyst is greater on lower-rarity jewelry.
Acquiring from Monsters: Tempering Catalyst can be acquired as a drop from certain monsters in the game.
Upgrade Paths or Vendor Recipes: Tempering Catalyst is also used in upgrade paths or vendor recipes to create other items. For example, you can use three Tempering Catalysts along with a Catalyst (random) to create an Unstable Catalyst.
Here is an example of the upgrade path or vendor recipe:
Outcome: Unstable Catalyst
Amount: 3
Ingredient: Tempering Catalyst (10)
Here are some examples of defense modifiers that can be enhanced by a Tempering Catalyst:
Increased Global Defenses
Increased Armor
Increased Evasion Rating
Increased Energy Shield
Increased Fire Resistance
Increased Maximum Energy Shield
Increased Maximum Life
Increased Elemental Resistances
Prefix:
100% increased Global Defenses
Armour is increased by Uncapped Fire Resistance
+(3–10) to Evasion Rating
+(3–10) to Armour
+(3–7) to Armour and +(3–7) to Evasion Rating
+(3–7) to Armour and +(3–4) to maximum Energy Shield
+(3–7) to Evasion Rating and +(3–4) to maximum Energy Shield
+(3–5) to maximum Energy Shield
+(6–11) to maximum Energy Shield
+(12–16) to maximum Energy Shield
+(11–35) to Evasion Rating
+(11–35) to Armour
+(9–25) to Armour and +(9–25) to Evasion Rating
+(9–25) to Armour and +(9–12) to maximum Energy Shield
+(9–25) to Evasion Rating and +(9–12) to maximum Energy Shield
+(17–23) to maximum Energy Shield
+(21–25) to Evasion Rating
+(24–30) to maximum Energy Shield
+(36–60) to Evasion Rating
+(36–60) to Armour
+(27–45) to Armour and +(27–45) to Evasion Rating
+(27–45) to Armour and +(18–22) to maximum Energy Shield
+(27–45) to Evasion Rating and +(18–22) to maximum Energy Shield
+(31–38) to maximum Energy Shield
+(18–26) to maximum Energy Shield
+(61–138) to Evasion Rating
+(40–49) to Evasion Rating
+(26–29) to Evasion Rating
+(39–49) to maximum Energy Shield
+(61–138) to Armour
+(46–103) to Armour and +(46–103) to Evasion Rating
+(46–103) to Armour and +(30–36) to maximum Energy Shield
+(46–103) to Evasion Rating and +(30–36) to maximum Energy Shield
+(50–61) to maximum Energy Shield
+(139–322) to Evasion Rating
+(62–72) to maximum Energy Shield
+(50–59) to maximum Energy Shield
+(27–32) to maximum Energy Shield
+(39–45) to maximum Energy Shield
+(50–60) to Evasion Rating
+(30–35) to Evasion Rating
+(50–90) to Armour
+(30–45) to Armour
+(139–322) to Armour
+(62–76) to maximum Energy Shield
+(77–90) to maximum Energy Shield
+(105–241) to Armour and +(105–241) to Evasion Rating
+(105–241) to Armour and +(58–67) to maximum Energy Shield
+(105–241) to Evasion Rating and +(58–67) to maximum Energy Shield
+(323–400) to Evasion Rating
+(323–400) to Armour
+(243–300) to Armour and +(243–300) to Evasion Rating
+(243–300) to Armour and +(69–75) to maximum Energy Shield
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