Fossil

Fossils are a special type of Stackable Currency introduced in the delve league that can be socketed into Delve Socketable Currency to modify the crafting behavior in specific ways.

List of fossils

Main page: List of fossils

Item	Drop Level	Effect(s)	Drop Areas	Additional Drop Restrictions
Aberrant FossilAberrant FossilStack Size: 20More Chaos modifiers No Lightning modifiersPlace in a Resonator to influence item crafting.	1	More Chaos modifiers No Lightning modifiers	N/A	Found in Fungal Caverns and Abyssal Depths biomes in the Azurite Mine.
Aetheric FossilAetheric FossilStack Size: 20More Caster modifiers Fewer Attack modifiersPlace in a Resonator to influence item crafting.	1	More Caster modifiers Fewer Attack modifiers	N/A	Found in Mines and Sulphur Vents biomes in the Azurite Mine.
Bloodstained FossilBloodstained FossilStack Size: 10Corrupted Has a Corrupted implicit modifierPlace in a Resonator to influence item crafting.	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 FossilBound FossilStack Size: 20More Minion, Aura or Curse modifiersPlace in a Resonator to influence item crafting.	1	More Minion, Aura or Curse modifiers	N/A	Found in Petrified Forest and Abyssal Depths biomes in the Azurite Mine.
Corroded FossilCorroded FossilStack Size: 20More Physical Ailment or Chaos Ailment modifiers No Elemental modifiersPlace in a Resonator to influence item crafting.	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 FossilDeft FossilStack Size: 20More Critical modifiers No Attribute modifiersPlace in a Resonator to influence item crafting.	1	More Critical modifiers No Attribute modifiers	N/A	Found in Magma Fissure biomes in the Azurite Mine.
Dense FossilDense FossilStack Size: 20More Defence modifiers No Life ModifiersPlace in a Resonator to influence item crafting.	1	More Defence modifiers No Life Modifiers	N/A	Found 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.	1	More Gem modifiers	N/A	Drops 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 itemsPlace in a Resonator to influence item crafting.	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 FossilFrigid FossilStack Size: 20More Cold modifiers No Fire modifiersPlace in a Resonator to influence item crafting.	1	More Cold modifiers No Fire modifiers	N/A	Found in Frozen Hollow biomes in the Azurite Mine.
Fundamental FossilFundamental FossilStack Size: 20More Attribute modifiers No Critical modifiersPlace in a Resonator to influence item crafting.	1	More Attribute modifiers No Critical modifiers	N/A	Found 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.	1	Item is overvalued by vendors	N/A	Found 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.	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 FossilHollow FossilStack Size: 10Has an Abyssal socketPlace in a Resonator to influence item crafting.	1	Has an Abyssal socket	N/A	Drops from completing a Crystal Spire node in Abyssal Depths biomes in the Azurite Mine.
Jagged FossilJagged FossilStack Size: 20More Physical modifiers No Chaos modifiersPlace in a Resonator to influence item crafting.	1	More Physical modifiers No Chaos modifiers	N/A	Found in Petrified Forest biomes in the Azurite Mine.
Lucent FossilLucent FossilStack Size: 20More Mana modifiers No Speed modifiersPlace in a Resonator to influence item crafting.	1	More Mana modifiers No Speed modifiers	N/A	Found in Abyssal Depths biomes in the Azurite Mine.
Metallic FossilMetallic FossilStack Size: 20More Lightning modifiers No Physical modifiersPlace in a Resonator to influence item crafting.	1	More Lightning modifiers No Physical modifiers	N/A	Found in Mines and Sulphur Vents biomes in the Azurite Mine.
Perfect FossilPerfect FossilStack Size: 20Improved QualityPlace in a Resonator to influence item crafting.	1	Improved Quality	N/A	Found in Fungal Caverns and Sulphur Vents biomes in the Azurite Mine.
Prismatic FossilPrismatic FossilStack Size: 20More Elemental modifiers No Physical Ailment or Chaos Ailment modifiersPlace in a Resonator to influence item crafting.	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 FossilPristine FossilStack Size: 20More Life modifiers No Defence modifiersPlace in a Resonator to influence item crafting.	1	More Life modifiers No Defence modifiers	N/A	Found in Mines and Magma Fissure biomes in the Azurite Mine.
Sanctified FossilSanctified FossilStack Size: 10Numeric modifier values are lucky High Level modifiers are more commonPlace in a Resonator to influence item crafting.	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 FossilScorched FossilStack Size: 20More Fire modifiers No Cold modifiersPlace in a Resonator to influence item crafting.	1	More Fire modifiers No Cold modifiers	N/A	Found in Magma Fissure biomes in the Azurite Mine.
Serrated FossilSerrated FossilStack Size: 20More Attack modifiers Fewer Caster modifiersPlace in a Resonator to influence item crafting.	1	More Attack modifiers Fewer Caster modifiers	N/A	Found in Mines and Frozen Hollow biomes in the Azurite Mine.
Shuddering FossilShuddering FossilStack Size: 20More Speed modifiers No Mana modifiersPlace in a Resonator to influence item crafting.	1	More Speed modifiers No Mana modifiers	N/A	Found 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 socketedPlace in a Resonator to influence item crafting.	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.