Fossil

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Fossils are a special type of currency that can be socketed into resonators to modify the crafting behavior in specific ways, released in the Delve league.

Fossils belong to the Stackable Currency item class for use in Item Filters[1].

Despite the similar wording to Chaos OrbsChaos OrbStack Size: 20Reforges a rare item with new random modifiersRight click this item then left click a rare item to apply it., using a resonator on an item with a metamod (such as prefixes cannot be changed or cannot roll caster modifiers) will completely ignore the effects of the modifier.

Obtaining

Fossil Remains, a kind of loot container for fossil

Some fossils are tied to specific Delve nodes.

  • Crystal Spire: Hollow FossilHollow FossilStack Size: 10Has an Abyssal socketPlace in a Resonator to influence item crafting.
  • Haunted Tomb: Tangled FossilTangled FossilStack Size: 10Makes a random modifier type much more likely and prevents
    another random modifier type
    Effects revealed once resonator is fully socketed
    Place in a Resonator to influence item crafting.
  • Humid Fissure: Fractured FossilFractured FossilStack Size: 10Creates a split copy
    Cannot be used to split Influenced,
    Enchanted, Fractured, or Synthesised items
    Place in a Resonator to influence item crafting.
  • Molten Cavity: Faceted FossilFaceted FossilStack Size: 10More Gem modifiersPlace in a Resonator to influence item crafting.
  • Stonewood Hollow: Bloodstained FossilBloodstained FossilStack Size: 10Corrupted
    Has a Corrupted implicit modifier
    Place in a Resonator to influence item crafting.
  • Time-Lost Cavern: Glyphic FossilGlyphic FossilStack Size: 10Has a Corrupt Essence modifierPlace in a Resonator to influence item crafting.

Fossils are primarily found in Fossil Remains in the darkness between nodes or behind fractured walls depending on the biome. They can also be obtained as a chest reward at the end of some Delve encounters such as the Smuggler's Stash node. Niko, Master of the Depths can also sometimes sell fossils for a certain amount of azurite.

Fossils can also be obtained from a variety of other mechanics including:

  • Sources of Delve rewards
  • The Tinkerer's TableThe Tinkerer's Table55x FossilTrying to bring your vision to life is enough to drive you mad.
  • Fossilised IncubatorFossilised IncubatorStack Size: 10Adds an incubated Fossil item to an equippable item
    Item drops after killing {0} monsters
    Right click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.
  • Ritual favour rewards
  • Tujen's vendor window
  • Unique Synthesis maps with the modifier Synthesised # Monsters have #% chance to drop a Fossil

Delve

List of fossil items organized by the Delve biomes you can obtain them from.

Biome Fossil Fossil found in location
Mines Metallic FossilMetallic FossilStack Size: 20More Lightning modifiers
No Physical modifiers
Place in a Resonator to influence item crafting.
Anywhere
Mines Serrated FossilSerrated FossilStack Size: 20More Attack modifiers
Fewer Caster modifiers
Place in a Resonator to influence item crafting.
Anywhere
Mines Pristine FossilPristine FossilStack Size: 20More Life modifiers
No Defence modifiers
Place in a Resonator to influence item crafting.
Anywhere
Mines Aetheric FossilAetheric FossilStack Size: 20More Caster modifiers
Fewer Attack modifiers
Place in a Resonator to influence item crafting.
Anywhere
Fungal Caverns Tangled FossilTangled FossilStack Size: 10Makes a random modifier type much more likely and prevents
another random modifier type
Effects revealed once resonator is fully socketed
Place in a Resonator to influence item crafting.
Haunted Tomb nodes only
Fungal Caverns Dense FossilDense FossilStack Size: 20More Defence modifiers
No Life Modifiers
Place in a Resonator to influence item crafting.
Anywhere
Fungal Caverns Aberrant FossilAberrant FossilStack Size: 20More Chaos modifiers
No Lightning modifiers
Place in a Resonator to influence item crafting.
Anywhere
Fungal Caverns Opulent FossilOpulent FossilStack Size: 20More Drop modifiers
No Tagless modifiers
Place in a Resonator to influence item crafting.
Anywhere
Fungal Caverns Corroded FossilCorroded FossilStack Size: 20More Physical Ailment or Chaos Ailment modifiers
No Elemental modifiers
Place in a Resonator to influence item crafting.
Anywhere
Fungal Caverns Gilded FossilGilded FossilStack Size: 10Item is overvalued by vendorsPlace in a Resonator to influence item crafting. Behind Fractured Walls only
Petrified Forest Bloodstained FossilBloodstained FossilStack Size: 10Corrupted
Has a Corrupted implicit modifier
Place in a Resonator to influence item crafting.
Stonewood Hollow nodes only
Petrified Forest Bound FossilBound FossilStack Size: 20More Minion, Aura or Curse modifiersPlace in a Resonator to influence item crafting. Anywhere
Petrified Forest Jagged FossilJagged FossilStack Size: 20More Physical modifiers
No Chaos modifiers
Place in a Resonator to influence item crafting.
Anywhere
Petrified Forest Corroded FossilCorroded FossilStack Size: 20More Physical Ailment or Chaos Ailment modifiers
No Elemental modifiers
Place in a Resonator to influence item crafting.
Anywhere
Petrified Forest Sanctified FossilSanctified FossilStack Size: 10Numeric modifier values are lucky
High Level modifiers are more common
Place in a Resonator to influence item crafting.
Behind Fractured Walls only
Abyssal Depths Hollow FossilHollow FossilStack Size: 10Has an Abyssal socketPlace in a Resonator to influence item crafting. Crystal Spire nodes only
Abyssal Depths Aberrant FossilAberrant FossilStack Size: 20More Chaos modifiers
No Lightning modifiers
Place in a Resonator to influence item crafting.
Anywhere
Abyssal Depths Bound FossilBound FossilStack Size: 20More Minion, Aura or Curse modifiersPlace in a Resonator to influence item crafting. Anywhere
Abyssal Depths Gilded FossilGilded FossilStack Size: 10Item is overvalued by vendorsPlace in a Resonator to influence item crafting. Behind Fractured Walls only
Abyssal Depths Lucent FossilLucent FossilStack Size: 20More Mana modifiers
No Speed modifiers
Place in a Resonator to influence item crafting.
Behind Fractured Walls only
Frozen Hollow Glyphic FossilGlyphic FossilStack Size: 10Has a Corrupt Essence modifierPlace in a Resonator to influence item crafting. Time-Lost Cavern nodes only
Frozen Hollow Frigid FossilFrigid FossilStack Size: 20More Cold modifiers
No Fire modifiers
Place in a Resonator to influence item crafting.
Anywhere
Frozen Hollow Serrated FossilSerrated FossilStack Size: 20More Attack modifiers
Fewer Caster modifiers
Place in a Resonator to influence item crafting.
Anywhere
Frozen Hollow Prismatic FossilPrismatic FossilStack Size: 20More Elemental modifiers
No Physical Ailment or Chaos Ailment modifiers
Place in a Resonator to influence item crafting.
Anywhere
Frozen Hollow Sanctified FossilSanctified FossilStack Size: 10Numeric modifier values are lucky
High Level modifiers are more common
Place in a Resonator to influence item crafting.
Behind Fractured Walls only
Magma Fissure Faceted FossilFaceted FossilStack Size: 10More Gem modifiersPlace in a Resonator to influence item crafting. Molten Cavity nodes only
Magma Fissure Scorched FossilScorched FossilStack Size: 20More Fire modifiers
No Cold modifiers
Place in a Resonator to influence item crafting.
Anywhere
Magma Fissure Prismatic FossilPrismatic FossilStack Size: 20More Elemental modifiers
No Physical Ailment or Chaos Ailment modifiers
Place in a Resonator to influence item crafting.
Anywhere
Magma Fissure Pristine FossilPristine FossilStack Size: 20More Life modifiers
No Defence modifiers
Place in a Resonator to influence item crafting.
Anywhere
Magma Fissure Deft FossilDeft FossilStack Size: 20More Critical modifiers
No Attribute modifiers
Place in a Resonator to influence item crafting.
Anywhere
Magma Fissure Fundamental FossilFundamental FossilStack Size: 20More Attribute modifiers
No Critical modifiers
Place in a Resonator to influence item crafting.
Behind Fractured Walls only
Sulfur Vents Fractured FossilFractured FossilStack Size: 10Creates a split copy
Cannot be used to split Influenced,
Enchanted, Fractured, or Synthesised items
Place in a Resonator to influence item crafting.
Humid Fissure nodes only
Sulfur Vents Metallic FossilMetallic FossilStack Size: 20More Lightning modifiers
No Physical modifiers
Place in a Resonator to influence item crafting.
Anywhere
Sulfur Vents Opulent FossilOpulent FossilStack Size: 20More Drop modifiers
No Tagless modifiers
Place in a Resonator to influence item crafting.
Anywhere
Sulfur Vents Aetheric FossilAetheric FossilStack Size: 20More Caster modifiers
Fewer Attack modifiers
Place in a Resonator to influence item crafting.
Anywhere
Sulfur Vents Fundamental FossilFundamental FossilStack Size: 20More Attribute modifiers
No Critical modifiers
Place in a Resonator to influence item crafting.
Anywhere

Note that the chests in the Smuggler's Stash node can randomly drop any type of fossil regardless of biome.

List of fossils

Main page: List of fossils
ItemDescriptionDrop
level
Drop areasAdditional
drop restrictions
Aberrant FossilAberrant FossilStack Size: 20More Chaos modifiers
No Lightning modifiers
Place in a Resonator to influence item crafting.
More Chaos modifiers
No Lightning modifiers
1Found in Fungal Caverns and Abyssal Depths biomes in the Azurite Mine.
Aetheric FossilAetheric FossilStack Size: 20More Caster modifiers
Fewer Attack modifiers
Place in a Resonator to influence item crafting.
More Caster modifiers
Fewer Attack modifiers
1Found in Mines and Sulphur Vents biomes in the Azurite Mine.
Bloodstained FossilBloodstained FossilStack Size: 10Corrupted
Has a Corrupted implicit modifier
Place in a Resonator to influence item crafting.
Corrupted
Has a Corrupted implicit modifier
1Drops from completing a Stonewood Hollow node in Petrified Forest biomes in the Azurite Mine.
Bound FossilBound FossilStack Size: 20More Minion, Aura or Curse modifiersPlace in a Resonator to influence item crafting.More Minion, Aura or Curse modifiers1Found in Petrified Forest and Abyssal Depths biomes in the Azurite Mine.
Corroded FossilCorroded FossilStack Size: 20More Physical Ailment or Chaos Ailment modifiers
No Elemental modifiers
Place in a Resonator to influence item crafting.
More Physical Ailment or Chaos Ailment modifiers
No Elemental modifiers
1Found in Fungal Caverns and Petrified Forest biomes in the Azurite Mine.
Deft FossilDeft FossilStack Size: 20More Critical modifiers
No Attribute modifiers
Place in a Resonator to influence item crafting.
More Critical modifiers
No Attribute modifiers
1Found in Magma Fissure biomes in the Azurite Mine.
Dense FossilDense FossilStack Size: 20More Defence modifiers
No Life Modifiers
Place in a Resonator to influence item crafting.
More Defence modifiers
No Life Modifiers
1Found in Fungal Caverns and Petrified Forest biomes in the Azurite Mine.
Faceted FossilFaceted FossilStack Size: 10More Gem modifiersPlace in a Resonator to influence item crafting.More Gem modifiers1Drops from completing a Molten Cavity node in Magma Fissure biomes in the Azurite Mine.
Fractured FossilFractured FossilStack Size: 10Creates a split copy
Cannot be used to split Influenced,
Enchanted, Fractured, or Synthesised items
Place in a Resonator to influence item crafting.
Creates a split copy
Cannot be used to split Influenced,
Enchanted, Fractured, or Synthesised items
1Drops from completing a Humid Fissure node in Sulphur Vents biomes in the Azurite Mine.
Frigid FossilFrigid FossilStack Size: 20More Cold modifiers
No Fire modifiers
Place in a Resonator to influence item crafting.
More Cold modifiers
No Fire modifiers
1Found in Frozen Hollow biomes in the Azurite Mine.
Fundamental FossilFundamental FossilStack Size: 20More Attribute modifiers
No Critical modifiers
Place in a Resonator to influence item crafting.
More Attribute modifiers
No Critical modifiers
1Found in Magma Fissure and Sulphur Vents biomes in the Azurite Mine.
Gilded FossilGilded FossilStack Size: 10Item is overvalued by vendorsPlace in a Resonator to influence item crafting.Item is overvalued by vendors1Found in Fungal Caverns and Abyssal Depths biomes in the Azurite Mine.
Glyphic FossilGlyphic FossilStack Size: 10Has a Corrupt Essence modifierPlace in a Resonator to influence item crafting.Has a Corrupt Essence modifier1Drops from completing a Time-Lost Cavern node in Frozen Hollow biomes in the Azurite Mine.
Hollow FossilHollow FossilStack Size: 10Has an Abyssal socketPlace in a Resonator to influence item crafting.Has an Abyssal socket1Drops from completing a Crystal Spire node in Abyssal Depths biomes in the Azurite Mine.
Jagged FossilJagged FossilStack Size: 20More Physical modifiers
No Chaos modifiers
Place in a Resonator to influence item crafting.
More Physical modifiers
No Chaos modifiers
1Found in Petrified Forest biomes in the Azurite Mine.
Lucent FossilLucent FossilStack Size: 20More Mana modifiers
No Speed modifiers
Place in a Resonator to influence item crafting.
More Mana modifiers
No Speed modifiers
1Found in Abyssal Depths biomes in the Azurite Mine.
Metallic FossilMetallic FossilStack Size: 20More Lightning modifiers
No Physical modifiers
Place in a Resonator to influence item crafting.
More Lightning modifiers
No Physical modifiers
1Found in Mines and Sulphur Vents biomes in the Azurite Mine.
Opulent FossilOpulent FossilStack Size: 20More Drop modifiers
No Tagless modifiers
Place in a Resonator to influence item crafting.
More Drop modifiers
No Tagless modifiers
1Found in Fungal Caverns and Sulphur Vents biomes in the Azurite Mine.
Prismatic FossilPrismatic FossilStack Size: 20More Elemental modifiers
No Physical Ailment or Chaos Ailment modifiers
Place in a Resonator to influence item crafting.
More Elemental modifiers
No Physical Ailment or Chaos Ailment modifiers
1Found in Magma Fissure and Frozen Hollow biomes in the Azurite Mine.
Pristine FossilPristine FossilStack Size: 20More Life modifiers
No Defence modifiers
Place in a Resonator to influence item crafting.
More Life modifiers
No Defence modifiers
1Found in Mines and Magma Fissure biomes in the Azurite Mine.
Sanctified FossilSanctified FossilStack Size: 10Numeric modifier values are lucky
High Level modifiers are more common
Place in a Resonator to influence item crafting.
Numeric modifier values are lucky
High Level modifiers are more common
1Found in Frozen Hollow and Petrified Forest biomes in the Azurite Mine.
Scorched FossilScorched FossilStack Size: 20More Fire modifiers
No Cold modifiers
Place in a Resonator to influence item crafting.
More Fire modifiers
No Cold modifiers
1Found in Magma Fissure biomes in the Azurite Mine.
Serrated FossilSerrated FossilStack Size: 20More Attack modifiers
Fewer Caster modifiers
Place in a Resonator to influence item crafting.
More Attack modifiers
Fewer Caster modifiers
1Found in Mines and Frozen Hollow biomes in the Azurite Mine.
Shuddering FossilShuddering FossilStack Size: 20More Speed modifiers
No Mana modifiers
Place in a Resonator to influence item crafting.
More Speed modifiers
No Mana modifiers
1Found in Frozen Hollow biomes in the Azurite Mine.
Tangled FossilTangled FossilStack Size: 10Makes a random modifier type much more likely and prevents
another random modifier type
Effects revealed once resonator is fully socketed
Place in a Resonator to influence item crafting.
Makes a random modifier type much more likely and prevents
another random modifier type
Effects revealed once resonator is fully socketed
1Drops from completing a Haunted Tomb node in Fungal Caverns biomes in the Azurite Mine.

Delve modifiers

Some fossils are able to roll modifiers exclusively obtained by crafting with fossils. This also includes legacy modifiers that were able to roll from regular fossils.

Related divination cards

The following divination cards can be exchanged for fossils:

ItemStack
size
Description
The Tinkerer's TableThe Tinkerer's Table55x FossilTrying to bring your vision to life is enough to drive you mad.55x Fossil

Version history

Version Changes
3.16.0
  • Fossils and Resonators are now more commonly found within Delve, and less commonly found from other sources.
  • Bloodstained FossilsBloodstained FossilStack Size: 10Corrupted
    Has a Corrupted implicit modifier
    Place in a Resonator to influence item crafting.
    now Corrupt an Item, granting them a Corrupted Implicit Modifier (previously granted a Vaal Modifier).
  • Enchanted Fossils have been renamed to Deft FossilsDeft FossilStack Size: 20More Critical modifiers
    No Attribute modifiers
    Place in a Resonator to influence item crafting.
    , which now grant more Critical Modifiers, and no Attribute Modifiers (previously granted a Labyrinth Enchantment).
  • Encrusted Fossils have been renamed to Fundamental FossilsFundamental FossilStack Size: 20More Attribute modifiers
    No Critical modifiers
    Place in a Resonator to influence item crafting.
    , which now grant more Attribute Modifiers, and no Critical Modifiers (previously granted more Sockets, with the possibility of White Sockets).
  • Tangled FossilsTangled FossilStack Size: 10Makes a random modifier type much more likely and prevents
    another random modifier type
    Effects revealed once resonator is fully socketed
    Place in a Resonator to influence item crafting.
    now makes a random Modifier type much more likely, and prevents another random modifier type (previously granted any Fossil modifiers). The effects are fully revealed once a Resonator is fully Socketed.
3.12.4
  • Fossils can now be used on Heist Contracts, Blueprints and Ally Equipment.
3.12.0
  • Item modifier tags have been entirely reworked with a goal in mind of consistency and simplicity. These changes have negligible impacts to the odds of various modifiers appearing on rare items naturally, but may have impacts to the results of certain crafting methods.
  • As a result of the above changes, several fossil descriptions have changed slightly.
3.10.0
  • Fossils can no longer craft any prefix or suffix mods that cannot be obtained elsewhere, with the exception of those granted by Faceted, Bloodstained and Hollow Fossils. Implicit modifiers (such as the one which changes an item's vendor sell price) remain. The following mods have been relocated, while all others can no longer be obtained:
  • On Boots: +2 to level of socketed Fire Gems (now from Warlord's Influence), +2 to level of socketed Cold Gems (now from Redeemer's Influence), +2 to level of socketed Lightning Gems (now from Crusader's Influence), +2 to level of socketed Chaos Gems (now from Hunter's Influence), +1 to global level of raised Spectres (now from Elder's Influence).
  • Helmet: Nearby Enemies have -x% Fire Resistance (now from Warlord's Influence), Nearby Enemies have -x% Cold Resistance (now from Redeemer's Influence), Nearby Enemies have -x% Lightning Resistance (now from Crusader's Influence), Nearby Enemies have -x% Chaos Resistance (now from Hunter's Influence), Nearby Enemies take x% increased Physical Damage (now from Elder's Influence), increased effect of Fortify (now from Crusader's Influence).
  • Body Armour: Socketed Attacks have -15 to Mana Cost (now from Warlord's Influence), x% increased Aura Effect on you (now from Redeemer's Influence).
  • Quiver: x% chance to gain a Frenzy Charge on hitting a Rare or Unique Enemy (now from Elder's Influence).
  • Belt: Increased Chaos Damage (now from Hunter's Influence), increased Physical Damage (now from Elder's Influence), increased Elemental Damage (now from Shaper's Influence), increased Energy Shield from Body Armour (now from Shaper's Influence, and now a Prefix), chance for double Armour Effect when hit (now from Elder's Influence, and now a Prefix).
  • Rings: Fire/Cold/Lightning/Physical/Chaos leech modifiers can now exclusively be found from special elemental Delve encounters.
  • Weapons: Socketed Attacks/Spells deal x% more Damage (now found from Shaper's Influence), chance for Poison/Bleeding inflicted with this weapon to deal more damage (now found from Elder's Influence), chance to Intimidate on Hit (now found from Hunter's Influence), Auras from your Skills grant increased Damage to you and Allies (now from Redeemer's Influence).
  • Jewels: Damage penetrates 1% Fire/Cold/Lightning/Elemental Resistance (now from Corrupted implicits).
  • Glove, Amulet and Shield Fossil-exclusive modifiers can no longer be obtained in any form. Existing items will be unchanged.
3.4.0
  • Introduced to the game.

References

  1. Bex_GGG (August 29, 2018). "Delve Patch Notes, Passive Tree and Item Filter Information". Official Path of Exile Forums. Retrieved 25 May 2021.