Fossil
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.
Shift click to unstack., 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

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.
Shift click to unstack. - 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 socketedPlace in a Resonator to influence item crafting.
Shift click to unstack. - Humid Fissure:
Fractured FossilFractured FossilStack Size: 10Creates a split copy
Cannot be used to split Influenced,
Enchanted, Fractured, or Synthesised itemsPlace in a Resonator to influence item crafting.
Shift click to unstack. - Molten Cavity:
Faceted FossilFaceted FossilStack Size: 10More Gem modifiersPlace in a Resonator to influence item crafting.
Shift click to unstack. - Stonewood Hollow:
Bloodstained FossilBloodstained FossilStack Size: 10Corrupted
Has a Corrupted implicit modifierPlace in a Resonator to influence item crafting.
Shift click to unstack. - Time-Lost Cavern:
Glyphic FossilGlyphic FossilStack Size: 10Has a Corrupt Essence modifierPlace in a Resonator to influence item crafting.
Shift click to unstack.
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 Table
The Tinkerer's Table
55x 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} monstersRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.
Shift click to unstack.- 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 |
---|---|---|
![]() |
![]() No Physical modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() Fewer Caster modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Defence modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() Fewer Attack modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() another random modifier type Effects revealed once resonator is fully socketedPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
![]() |
![]() |
![]() No Life ModifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Lightning modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Elemental modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() Shift click to unstack. ![]() |
Behind Fractured Walls only |
![]() |
![]() Has a Corrupted implicit modifierPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
![]() |
![]() |
![]() Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Chaos modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Elemental modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() High Level modifiers are more commonPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Behind Fractured Walls only |
![]() |
![]() Shift click to unstack. ![]() |
![]() |
![]() |
![]() No Lightning modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() Shift click to unstack. ![]() |
Behind Fractured Walls only |
![]() |
![]() No Speed modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Behind Fractured Walls only |
![]() |
![]() Shift click to unstack. ![]() |
![]() |
![]() |
![]() No Fire modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() Fewer Caster modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Physical Ailment or Chaos Ailment modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() High Level modifiers are more commonPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Behind Fractured Walls only |
![]() |
![]() Shift click to unstack. ![]() |
![]() |
![]() |
![]() No Cold modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Physical Ailment or Chaos Ailment modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Defence modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Attribute modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Critical modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Behind Fractured Walls only |
![]() |
![]() Cannot be used to split Influenced, Enchanted, Fractured, or Synthesised itemsPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
![]() |
![]() |
![]() No Physical modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() Fewer Attack modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
![]() |
![]() No Critical modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() |
Anywhere |
Note that the chests in the Smuggler's Stash node can randomly drop any type of fossil regardless of biome.
List of fossils
Item | Drop Level | Effect(s) | Drop Areas | Additional Drop Restrictions |
---|---|---|---|---|
Aberrant Fossil![]() No Lightning modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Chaos modifiers No Lightning modifiers | N/A | Found in Fungal Caverns and Abyssal Depths biomes in the Azurite Mine. |
Aetheric Fossil![]() Fewer Attack modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Caster modifiers Fewer Attack modifiers | N/A | Found in Mines and Sulphur Vents biomes in the Azurite Mine. |
Bloodstained Fossil![]() Has a Corrupted implicit modifierPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | Corrupted Has a Corrupted implicit modifier | N/A | Drops from completing a Stonewood Hollow node in Petrified Forest biomes in the Azurite Mine. |
Bound Fossil![]() Shift click to unstack. ![]() | 1 | More Minion, Aura or Curse modifiers | N/A | Found in Petrified Forest and Abyssal Depths biomes in the Azurite Mine. |
Corroded Fossil![]() No Elemental modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Physical Ailment or Chaos Ailment modifiers No Elemental modifiers | N/A | Found in Fungal Caverns and Petrified Forest biomes in the Azurite Mine. |
Deft Fossil![]() No Attribute modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Critical modifiers No Attribute modifiers | N/A | Found in Magma Fissure biomes in the Azurite Mine. |
Dense Fossil![]() No Life ModifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Defence modifiers No Life Modifiers | N/A | Found in Fungal Caverns and Petrified Forest biomes in the Azurite Mine. |
Faceted Fossil![]() Shift click to unstack. ![]() | 1 | More Gem modifiers | N/A | Drops from completing a Molten Cavity node in Magma Fissure biomes in the Azurite Mine. |
Fractured Fossil![]() Cannot be used to split Influenced, Enchanted, Fractured, or Synthesised itemsPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | Creates a split copy Cannot be used to split Influenced, Enchanted, Fractured, or Synthesised items | N/A | Drops from completing a Humid Fissure node in Sulphur Vents biomes in the Azurite Mine. |
Frigid Fossil![]() No Fire modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Cold modifiers No Fire modifiers | N/A | Found in Frozen Hollow biomes in the Azurite Mine. |
Fundamental Fossil![]() No Critical modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Attribute modifiers No Critical modifiers | N/A | Found in Magma Fissure and Sulphur Vents biomes in the Azurite Mine. |
Gilded Fossil![]() Shift click to unstack. ![]() | 1 | Item is overvalued by vendors | N/A | Found in Fungal Caverns and Abyssal Depths biomes in the Azurite Mine. |
Glyphic Fossil![]() Shift click to unstack. ![]() | 1 | Has a Corrupt Essence modifier | N/A | Drops from completing a Time-Lost Cavern node in Frozen Hollow biomes in the Azurite Mine. |
Hollow Fossil![]() Shift click to unstack. ![]() | 1 | Has an Abyssal socket | N/A | Drops from completing a Crystal Spire node in Abyssal Depths biomes in the Azurite Mine. |
Jagged Fossil![]() No Chaos modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Physical modifiers No Chaos modifiers | N/A | Found in Petrified Forest biomes in the Azurite Mine. |
Lucent Fossil![]() No Speed modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Mana modifiers No Speed modifiers | N/A | Found in Abyssal Depths biomes in the Azurite Mine. |
Metallic Fossil![]() No Physical modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Lightning modifiers No Physical modifiers | N/A | Found in Mines and Sulphur Vents biomes in the Azurite Mine. |
Perfect Fossil![]() Shift click to unstack. ![]() | 1 | Improved Quality | N/A | Found in Fungal Caverns and Sulphur Vents biomes in the Azurite Mine. |
Prismatic Fossil![]() No Physical Ailment or Chaos Ailment modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Elemental modifiers No Physical Ailment or Chaos Ailment modifiers | N/A | Found in Magma Fissure and Frozen Hollow biomes in the Azurite Mine. |
Pristine Fossil![]() No Defence modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Life modifiers No Defence modifiers | N/A | Found in Mines and Magma Fissure biomes in the Azurite Mine. |
Sanctified Fossil![]() High Level modifiers are more commonPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | Numeric modifier values are lucky High Level modifiers are more common | N/A | Found in Frozen Hollow and Petrified Forest biomes in the Azurite Mine. |
Scorched Fossil![]() No Cold modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Fire modifiers No Cold modifiers | N/A | Found in Magma Fissure biomes in the Azurite Mine. |
Serrated Fossil![]() Fewer Caster modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Attack modifiers Fewer Caster modifiers | N/A | Found in Mines and Frozen Hollow biomes in the Azurite Mine. |
Shuddering Fossil![]() No Mana modifiersPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | More Speed modifiers No Mana modifiers | N/A | Found in Frozen Hollow biomes in the Azurite Mine. |
Tangled Fossil![]() another random modifier type Effects revealed once resonator is fully socketedPlace in a Resonator to influence item crafting. Shift click to unstack. ![]() | 1 | Makes a random modifier type much more likely and prevents another random modifier type Effects revealed once resonator is fully socketed | N/A | Drops 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:
Item | Stack Size | Effect(s) |
---|---|---|
![]() ![]() ![]() ![]() | 5 | 5x Fossil |
Version history
Version | Changes |
---|---|
3.16.0 |
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3.12.0 |
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3.10.0 |
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3.4.0 |
|
References
- ↑ Bex_GGG (August 29, 2018). "Delve Patch Notes, Passive Tree and Item Filter Information". Official Path of Exile Forums. Retrieved 25 May 2021.