Infusion

Weapons and Shields can be enhanced through Infusion, which adds elemental damage and/or modifies Scaling.

Infusions are conducted by Blacksmith Andre in the Firelink Shrine.

List of Coals

In order to conduct certain Infusions, Blacksmith Andre must be given the correct Coal to work with.
Four Coals are required to unlock all Infusions:

Key Item	Usage	Availability
Farron Coal	Unlocks Infusion with Heavy Gems, Sharp Gems and Poison Gems.	On the Road of Sacrifices, in the building right above the Farron Keep Bonfire, guarded by a Black Knight.
Giant's Coal	Unlocks Infusion with Lightning Gems, Simple Gems and Chaos Gems.	In Anor Londo, on the corpse of the Giant Blacksmith.
Profaned Coal	Unlocks Infusion with Dark Gems, Blood Gems and Hollow Gems.	Inside the Irithyll Dungeon, in a cell on the lower levels, guarded by several Wretches.
Sage's Coal	Unlocks Infusion with Crystal Gems, Blessed Gems and Deep Gems.	In Farron Keep, inside a small structure guarded by a Darkwraith.

List of Gems

Weapons can be Infused with Gems, each of which has a different effect:

Gem	Effect
Heavy Gem	Increases Str. Scaling, but reduces base damage and Dex. Scaling.
Sharp Gem	Increases Dex. Scaling, but reduces base damage and Str. Scaling.
Refined Gem	Balances Str. and Dex. Scaling, but reduces base damage.
Raw Gem	Increases base damage, but removes Str. and Dex. Scaling.
Crystal Gem	Adds Magic damage and Int. Scaling, but reduces base damage and Str. and Dex. Scaling.
Simple Gem	Adds Magic damage, Int. Scaling, and FP Regen, but reduces base damage and Str. and Dex. Scaling.
Fire Gem	Adds Fire damage, but removes all Scaling.
Chaos Gem	Adds Fire damage and Int./Fth. Scaling, but reduces base damage and Str. and Dex. Scaling.
Lightning Gem	Adds Lightning damage and Fth. Scaling, but reduces base damage and Str. and Dex. Scaling.
Blessed Gem	Adds Fth. Scaling and HP Regen, but reduces base damage and Str. and Dex. Scaling. Strong VS Undead.
Deep Gem	Adds Dark damage, but removes all Scaling.
Dark Gem	Adds Dark damage and Int./Fth. Scaling, but reduces base damage and Str. and Dex. Scaling.
Blood Gem	Adds Bleed, but reduces base damage and Str. and Dex. Scaling.
Poison Gem	Adds Poison, but reduces base damage and Str. and Dex. Scaling.
Hollow Gem	Adds Lck. Scaling, but reduces base damage, and Str. and Dex. Scaling.
Shriving Stone	Remove Infusions.

Limitations

The following Equipment cannot be infused:

• Bows
• Greatbows
• Crossbows
• Chimes
• Talismans
• Staves
• Pyromancy Flames
• Anything with the Unique or Boss Reinforcement Path
• Certain Regular Reinforcement Weapons:
  • Handmaid's Dagger
  • Scholar's Candlestick
  • Cleric's Candlestick
  • Executioner's Greatsword
  • Butcher Knife
  • Gargoyle Flame Hammer
  • Gargoyle Flame Spear
  • Soldering Iron
  • Spotted Whip
  • Torch
  • Follower Torch

Buffs and Infusion

Certain Infusions cannot be Buffed, i.e. affected by Spells like Magic Weapon or Consumables like Gold Pine Resin.

The following Infusions work with Buffs:

• Heavy
• Sharp
• Raw
• Refined
• Hollow

The following Infusions do NOT work with Buffs:

• Poison
• Crystal
• Blessed
• Deep
• Dark
• Bleed
• Lightning
• Simple
• Chaos
• Fire