PoE Fossil Crafting Guide: Fossil Locations, Fossils Crafting Guide

PoE Fossil List

Aberrant Fossil Aetheric Fossil Bloodstained Fossil
Bound Fossil Corroded Fossil Dense Fossil
Enchanted Fossil Encrusted Fossil Faceted Fossil
Fractured Fossil Frigid Fossil Gilded Fossil
Glyphic Fossil Hollow Fossil Jagged Fossil
Lucent Fossil Metallic Fossil Perfect Fossil
Prismatic Fossil Pristine Fossil Sanctified Fossil
Scorched Fossil Serrated Fossil Shuddering Fossil
Tangled Fossil    

PoE 30% Quality

Quality is normally capped at 20%. However, there are certain crafting methods that can increase quality beyond that, including:

(1) 30% Quality Fossil

A resonator with Perfect Fossil socketed, increasing quality up to 30%. Perfect Fossil is a fossil type. Sets quality randomly from 15 to 30%.

(2) 30% Quality Beastcraft

Beastcrafting is a method of crafting by sacrificing beasts to the blood altar in the Menagerie. Each beastcrafing recipe requires four beasts to be sacrificed, with most of them requiring one specific Red Beast and three Rare Beasts. The four chosen beasts are released into the arena surrounding the blood altar and must be killed to complete the recipe. If the player dies during the attempt, the recipe fails and the beasts are lost.

If an item is created, the resulting item level is equal to the level of the main beast sacrificed. Recipes that create unique items can generate league-specific uniques. The table below displays the resulting crafts when sacrificing to the blood altar.

Header Subheader Notes Components
Corrupt an Armour or Weapon To have 30% Quality Will not work on corrupted items. 1x level 0+ Craicic Vassal
Create an Item 23% Quality Corrupted Gem   1x level 0+ Farric Magma Hound

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(3) Safehouse crafting

Immortal Syndicate safehouse with Hillock stationed. Note: corrupted items cannot be crafted; the quality can be enhanced on unidentified items.

Job type Target Rank/Tier Mission
Intervention Hillock Sergeant Modify a Map's quality to 25%
Intervention Hillock Lieutenant Modify a Map's quality to 30%
Intervention Hillock Captain Modify a Map's quality to 35%
Fortification Hillock Sergeant Modify a Armour Piece's quality to 24%
Fortification Hillock Lieutenant Modify a Armour Piece's quality to 26%
Fortification Hillock Captain Modify a Armour Piece's quality to 28%
Transportation Hillock Sergeant Modify a Weapon's quality to 24%
Transportation Hillock Lieutenant Modify a Weapon's quality to 26%
Transportation Hillock Captain Modify a Weapon's quality to 28%
Research Hillock Sergeant Modify a Flask's quality to 22%
Research Hillock Lieutenant Modify a Flask's quality to 24%
Research Hillock Captain Modify a Flask's quality to 26%

PoE Fossil Crafting Guide

Fossils are a special type of currency introduced in the delve league that can be socketed into resonators to modify the crafting behavior in specific ways. Fossils can also add special Delve modifiers.

Item Effect(s) Crafting Weight As a drop from the following Biomes: Drop
Level
Aberrant Fossil Aberrant Fossil More Chaos modifiers
No Lightning modifiers
  • lightning x0%
  • chaos x1000%
  • poison x500%
Fungal Caverns, Abyssal Depths 1
Aetheric Fossil Aetheric Fossil More Caster modifiers
Fewer Attack modifiers
  • attack x15%
  • caster x1000%
Sulphur Vents 1
Bloodstained Fossil Bloodstained Fossil Has a Vaal modifier it does not add a corruption mod As a drop from a room that Contains Fossils:

  • Smuggler’s Stash (Any Biome)
  • Haunted Tomb (Fungal Caverns)
  • Stonewood Hollow (Petrified Forest)
  • Crystal Spire (Abyssal Depths)
  • Time-Lost Cavern (Frozen Hollow)
  • Molten Cavity (Magma Fissure)
  • Humid Fissure (Sulphur Vents)
1
Bound Fossil Bound Fossil More Minion or Aura modifiers
  • minion x1000%
  • aura x1000%
Petrified Forest, Abyssal Depths 1
Corroded Fossil Corroded Fossil More Poison Poison or Bleeding modifiers
No Elemental modifiers
  • elemental x0%
  • fire x0%
  • cold x0%
  • lightning x0%
  • bleed x1000%
  • poison x1000%
Fungal Caverns, Petrified Forest 1
Dense Fossil Dense Fossil More Armour, Energy Shield or Evasion modifiers
No Life Modifiers
  • life x0%
  • defences x1000%
Fungal Cavern, Petrified Forest 1
Enchanted Fossil Enchanted Fossil Has a Labyrinth Enchantment Enchantments have their own mod slot on items and they no longer use the implicit mod slot.  Magma Fissure 1
Encrusted Fossil Encrusted Fossil More sockets
Can have white sockets
Acts on 6L like a Chromatic Orb, rerolls the socket colours. Magma Fissure (Only behind a Fractured Wall) 1
Faceted Fossil Faceted Fossil More Socketed Gem Level modifiers
  • gem_level x1000%
As a drop from a room that Contains Fossils:

  • Smuggler’s Stash (Any Biome)
  • Haunted Tomb (Fungal Caverns)
  • Stonewood Hollow (Petrified Forest)
  • Crystal Spire (Abyssal Depths]
  • Time-Lost Cavern (Frozen Hollow)
  • Molten Cavity (Magma Fissure)
  • Humid Fissure (Sulphur Vents)
1
Fractured Fossil Fractured Fossil Creates a mirrored copy Craft a random item and copies it afterward and the result is unpredictable As a drop from a room that Contains Fossils:

  • Smuggler’s Stash (Any Biome)
  • Haunted Tomb (Fungal Caverns)
  • Stonewood Hollow (Petrified Forest)
  • Crystal Spire (Abyssal Depths]
  • Time-Lost Cavern (Frozen Hollow)
  • Molten Cavity (Magma Fissure)
  • Humid Fissure (Sulphur Vents)
1
Frigid Fossil Frigid Fossil More Cold modifiers
No Fire modifiers
  • fire x0%
  • cold x1000%
Frozen Hollow 1
Gilded Fossil Gilded Fossil Item is overvalued by vendors The result is overvalued and RNG depends on its weight.  Fungal Cavern (Only behind a Fractured Wall) 1
Glyphic Fossil Glyphic Fossil Has a Corrupt Essence modifier Act like one of them: Essence of Delirium, Essence of Horror, Essence of Hysteria, Essence of Insanity As a drop from a room that Contains Fossils:

  • Smuggler’s Stash (Any Biome)
  • Haunted Tomb (Fungal Caverns)
  • Stonewood Hollow (Petrified Forest)
  • Crystal Spire (Abyssal Depths]
  • Time-Lost Cavern (Frozen Hollow)
  • Molten Cavity (Magma Fissure)
  • Humid Fissure (Sulphur Vents)
1
Hollow Fossil Hollow Fossil Has an Abyssal socket Abyss jewels can be put into normal jewel sockets on your passive skill tree or into an Abyssal Socket on an item.  As a drop from a room that Contains Fossils:

  • Smuggler’s Stash (Any Biome)
  • Haunted Tomb (Fungal Caverns)
  • Stonewood Hollow (Petrified Forest)
  • Crystal Spire (Abyssal Depths)
  • Time-Lost Cavern (Frozen Hollow)
  • Molten Cavity (Magma Fissure)
  • Humid Fissure (Sulphur Vents)
1
Jagged Fossil Jagged Fossil More Physical modifiers
No Chaos modifiers
  • chaos x0%
  • poison x0%
  • physical x1000%
  • bleed x500%
Petrified Forest 1
Lucent Fossil Lucent Fossil More Mana modifiers
No Speed modifiers
  • speed x0%
  • mana x1000%
  • Abyssal Depths biome (Only behind a Fractured Wall)
  • As a drop from a room that “Contains Fossils“:
    • Smuggler’s Stash (Any Biome)
    • Haunted Tomb (Fungal Caverns)
    • Stonewood Hollow (Petrified Forest)
    • Crystal Spire (Abyssal Depths]
    • Time-Lost Cavern (Frozen Hollow)
    • Molten Cavity (Magma Fissure)
    • Humid Fissure (Sulphur Vents)
1
Metallic Fossil Metallic Fossil More Lightning modifiers
No Physical modifiers
  • physical x0%
  • bleed x0%
  • lightning x1000%
Sulphur Vents 1
Perfect Fossil Perfect Fossil Improved Quality Sets quality randomly range from 15% to 30% Sulphur Vents, Fungal Caverns 1
Prismatic Fossil Prismatic Fossil More Elemental modifiers
No Poison Poison or Bleeding modifiers
  • bleed x0%
  • poison x0%
  • fire x500%
  • cold x500%
  • lightning x500%
  • elemental x1000%
Magma Fissure, Frozen Hollow 1
Pristine Fossil Pristine Fossil More Life modifiers
No Armour, Energy Shield or Evasion modifiers
  • defences x0%
  • flat_life_regen x10%
  • life x1000%
Magma Fissure, Frozen Hollow 1
Sanctified Fossil Sanctified Fossil Numeric modifier values are lucky
High Level modifiers are more common
Lucky means the usual: Rolling twice and picking the higher result. Petrified Forest (Only behind a Fractured Wall), Frozen Hollow (Only behind a Fractured Wall) 1
Scorched Fossil Scorched Fossil More Fire modifiers
No Cold modifiers
  • cold x0%
  • fire x1000%
Magma Fissure 1
Serrated Fossil Serrated Fossil More Attack modifiers
Fewer Caster modifiers
  • caster x15%
  • attack x1000%
Frozen Hollow 1
Shuddering Fossil Shuddering Fossil More Speed modifiers
No Mana modifiers
  • mana x0%
  • speed x1000%
  • In the Frozen Hollow Biome only behind a Fractured Wall
  • As a drop from a room that “Contains Fossils“:
    • Smuggler’s Stash (Any Biome)
    • Haunted Tomb (Fungal Caverns)
    • Stonewood Hollow (Petrified Forest)
    • Crystal Spire (Abyssal Depths]
    • Time-Lost Cavern (Frozen Hollow)
    • Molten Cavity (Magma Fissure)
    • Humid Fissure (Sulphur Vents)
1
Tangled Fossil Tangled Fossil Can have any Fossil modifiers One of any fossil mods
  • As a drop from a room that Contains Fossils:
    • Smuggler’s Stash (Any Biome)
    • Haunted Tomb (Fungal Caverns)
    • Stonewood Hollow (Petrified Forest)
    • Crystal Spire (Abyssal Depths]
    • Time-Lost Cavern (Frozen Hollow)
    • Molten Cavity (Magma Fissure)
    • Humid Fissure (Sulphur Vents)
  • Can be found in research safehouse chest when Korell Goya is added to the safehouse
1

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Perfect Fossil Crafting: Improved Quality

How does Perfect Fossil work? Perfect Fossil Perfect Fossil effect: Improved Quality. Sets quality randomly range from 15 to 30%. It can be used to improve the quality of a weapon, armour, flask, map, and strongbox. It cannot be applied on gems.

Quality can be applied to most equipment other than amulets, rings, belts, quivers and jewels, as well as strongboxes. Quality is normally capped at 20%. However, there are certain crafting methods that can increase quality beyond that, including:

  • Beastcrafting recipe for “Corrupt an item with 30% Quality”
  • A resonator with Perfect Fossil Perfect Fossil socketed, increasing quality up to 30%
  • Immortal Syndicate safehouse with Hillock stationed

Additionally, certain Veiled modifiers add Quality as part of explicit mods. This bonus quality does not count against the 20% quality an item is normally allowed to have, even if the veiled modifier is added before using currency to upgrade the item.

How to use Perfect Fossil? Place a Faceted Fossil in a Resonator to influence item crafting. Craft effect: Improved Quality

Get a 30 quality Unique item: If you want a unique item with 30% quality:

  • 1. Using many Perfect Fossil Perfect Fossil to craft a 30% quality item.
  • 2. Applying Orb of Scouring Orb of Scouring to change the item into a normal item.
  • 3. Using thousands of Orb of Chance Orb of Chance to chance it.

This will cost lots of currency and time. It is worth it if you can get the base 6l much cheaper than the unique 6l.

Farming Perfect Fossil in Azurite Mine

The drop location of Perfect Fossil is Azurite Mine. Standing on any Waypoint, click the flashing candle icon: "Click to travel to the Mine Encampment", then you will go to the Azurite Mine.

Azurite Mine

There are two ways to obtain Perfect Fossil.

1. Purchase from Niko the Mad

Sometimes, Niko sells a Perfect Fossil for 10 000 Azurite. Niko is one of the five masters. He provides introduction to delves and appears when harvesting Voltaxic Sulphite. He also sells Fossils and Resonators for Azurite.

2. It can be dropped from the Biomes: Sulphur Vents, Fungal Caverns

In addition, you can also exchange currency items for it. The price of Perfect Fossil is 5 Chaos Orbs.

Aberrant Fossil crafting: More Chaos modifiers, No Lightning modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with lightning tags by 0, chaos tags by 10, and poison tags by 5.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
of the Underground Suffix CurseOnHitDespair 1 Curse Enemies with Level 10 Despair on Hit abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
of the Underground Suffix CurseOnHitDespair 1 Curse Enemies with Level 10 Despair on Hit abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
Subterranean Prefix ChaosResistancePrefix 1 +(20-35)% to Chaos Resistance abyss_jewel 0
jewel 0
quiver 0
shield 0
body_armour 0
boots 0
gloves 0
default 0
Subterranean Prefix ChaosDamageLifeLeech 1 0.2% of Chaos Damage Leeched as Life abyss_jewel 0
jewel 0
ring 600
default 0
of the Underground Suffix LocalDisplayNearbyEnemyChaosDamageResistance 1 Nearby Enemies have -9% to Chaos Resistance
-9% to Chaos Resistance
abyss_jewel 0
jewel 0
helmet 2000
default 0
Subterranean Prefix IncreasedChaosDamagePrefix 1 (20-30)% increased Chaos Damage abyss_jewel 0
jewel 0
amulet 2000
belt 2000
default 0
of the Underground Suffix IncreasedChaosDamage 1 (13-19)% increased Chaos Damage jewel 1000
abyss_jewel 1000
default 0
of the Underground Suffix ChaosResistanceAgainstDamageOverTime 1 +(30-40)% Chaos Resistance against Damage Over Time abyss_jewel 0
jewel 0
body_armour 2000
shield 2000
quiver 2000
default 0
Subterranean Prefix AddedChaosDamage 1 Adds (15-20) to (21-30) Chaos Damage abyss_jewel 0
jewel 0
gloves 2000
default 0
Subterranean Prefix IncreaseSpecificSocketedGemLevel 1 +2 to Level of Socketed Chaos Gems abyss_jewel 0
jewel 0
boots 2000
default 0

Aetheric Fossil crafting: More Caster modifiers. Fewer Attack modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with attack tags by .15 and spell tags by 10.

Added Mods; The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
Subterranean Prefix SocketedSpellsDamageFinal 1 Socketed Skills deal 40% more Spell Damage abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
Subterranean Prefix SocketedSpellsDamageFinal 1 Socketed Skills deal 20% more Spell Damage abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
of the Underground Suffix SupportedByArcaneSurge 1 Socketed Gems are Supported by Level 1 Arcane Surge abyss_jewel 0
jewel 0
body_armour 600
default 0
of the Underground Suffix SocketedSkillsCastSpeed 1 Socketed Skills have 18% increased Cast Speed abyss_jewel 0
jewel 0
gloves 2000
default 0
of the Underground Suffix SocketedSpellsManaCost 1 Socketed Spells have 20% reduced Mana Cost abyss_jewel 0
jewel 0
shield 2000
boots 2000
helmet 2000
default 0
of the Underground Suffix AvoidInterruptionWhileCasting 1 (15-20)% chance to Avoid interruption from Stuns while Casting jewel 1000
abyss_jewel 1000
default 0

Bloodstained Fossil crafting: Has a Vaal modifier

Forced Mods: Using this fossil guarantee's the spawn of one of the following mods:

Name Generation Type Group Level Stats Spawn Weighting
Vaal Prefix MapMonsterPacks 1 20% increased Quantity of Items found in this Area
20% increased Rarity of Items found in this Area
+10% Monster pack size
Found Items have a 10% chance to drop Corrupted in Area
Area is inhabited by the Vaal
default 0
of the Underground Suffix VaalSoulCost 1 20% reduced Soul Cost of Vaal Skills abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
of the Underground Suffix VaalSoulCost 1 40% reduced Soul Cost of Vaal Skills abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
of the Underground Suffix AdditionalVaalSoulOnKill 1 (5-8)% chance to gain an additional Vaal Soul on Kill abyss_jewel 0
jewel 0
helmet 2000
body_armour 2000
boots 2000
shield 2000
default 0
of the Underground Suffix AdditionalVaalSoulOnKill 1 (3-5)% chance to gain an additional Vaal Soul on Kill abyss_jewel 2000
jewel 2000
default 0
of the Underground Suffix VaalSkillCriticalStrikeChance 1 (80-120)% increased Vaal Skill Critical Strike Chance abyss_jewel 0
jewel 0
quiver 2000
gloves 2000
default 0
of the Underground Suffix VaalSkillDuration 1 (15-25)% increased Vaal Skill Effect Duration abyss_jewel 0
jewel 0
amulet 2000
default 0
of the Underground Suffix VaalSkillDamage 1 Vaal Skills deal (20-40)% increased Damage abyss_jewel 0
jewel 0
belt 2000
ring 2000
default 0

Bound Fossil crafting: More Minion or Aura modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with minion tags by 10 and aura tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
of the Underground Suffix IncreasedDamageFromAuras 1 Auras from your Skills grant 2% increased Damage to you and Allies abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
of the Underground Suffix IncreasedDamageFromAuras 1 Auras from your Skills grant 4% increased Damage to you and Allies abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
Subterranean Prefix WeaponCasterDamagePrefix 1 Minions deal (30-44)% increased Damage abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
Subterranean Prefix WeaponCasterDamagePrefix 25 Minions deal (45-59)% increased Damage abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
Subterranean Prefix WeaponCasterDamagePrefix 50 Minions deal (60-74)% increased Damage abyss_jewel 0
jewel 0
one_hand_weapon 1000
default 0
Subterranean Prefix WeaponCasterDamagePrefix 75 Minions deal (75-80)% increased Damage abyss_jewel 0
jewel 0
one_hand_weapon 500
default 0
Subterranean Prefix WeaponCasterDamagePrefix 1 Minions deal (51-70)% increased Damage abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
Subterranean Prefix WeaponCasterDamagePrefix 25 Minions deal (71-90)% increased Damage abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
Subterranean Prefix WeaponCasterDamagePrefix 50 Minions deal (91-110)% increased Damage abyss_jewel 0
jewel 0
two_hand_weapon 1000
default 0
Subterranean Prefix WeaponCasterDamagePrefix 75 Minions deal (111-130)% increased Damage abyss_jewel 0
jewel 0
two_hand_weapon 500
default 0
Subterranean Prefix MinionDamage 1 Minions deal (20-30)% increased Damage abyss_jewel 0
jewel 0
gloves 2000
default 0
of the Underground Suffix MinionRunSpeed 74 Minions have (15-30)% increased Movement Speed abyss_jewel 0
jewel 0
quiver 2000
ring 2000
amulet 2000
default 0
of the Underground Suffix MinionLife 74 Minions have (20-30)% increased maximum Life abyss_jewel 0
jewel 0
body_armour 2000
shield 2000
belt 2000
default 0
of the Underground Suffix MinionGlobalSkillLevel 1 +1 to Level of all Raise Spectre Gems abyss_jewel 0
jewel 0
boots 2000
default 0
of the Underground Suffix AuraEffect 1 (20-25)% increased effect of Non-Curse Auras from your Skills abyss_jewel 0
jewel 0
body_armour 2000
default 0
of the Underground Suffix ReducedManaReservationsCost 1 (5-4)% reduced Mana Reserved abyss_jewel 0
jewel 0
helmet 2000
default 0
Subterranean Prefix MinionDamage 1 Minions deal (14-16)% increased Damage abyss_jewel 2000
default 0
of the Underground Suffix MinionAttackSpeedAndCastSpeed 1 Minions have (4-6)% increased Attack Speed
Minions have (4-6)% increased Cast Speed
abyss_jewel 0
jewel 2000
default 0

Corroded Fossil crafting: More Poison or Bleeding modifiers. No Elemental modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with elemental tags by 0, cold tags by 0, fire tags by 0, lightning tags by 0, bleed tags by 10, and poison tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil.

Name Generation Type Group Level Stats Spawn Weighting
Subterranean Prefix LocalChanceForPoisonDamage100FinalInflictedWithThisWeapon 1 60% chance for Poisonsinflicted with this Weapon to deal 100% more Damage abyss_jewel 0
jewel 0
weapon 2000
default 0
Subterranean Prefix LocalChanceForBleedingDamage100FinalInflictedWithThisWeapon 1 60% chance for Bleeding inflicted with this Weapon to deal 100% more Damage abyss_jewel 0
jewel 0
weapon 2000
default 0
of the Underground Suffix ChanceToAvoidPoison 1 50% chance to Avoid being Poisoned abyss_jewel 0
jewel 0
shield 1600
helmet 1600
boots 1600
body_armour 1600
default 0
of the Underground Suffix ChanceToAvoidBleeding 1 50% chance to avoid Bleeding abyss_jewel 0
jewel 0
shield 1600
helmet 1600
boots 1600
body_armour 1600
default 0
of the Underground Suffix AilmentDamage 1 (30-40)% increased Damage with Ailments abyss_jewel 0
jewel 0
quiver 1600
ring 1600
amulet 1600
belt 1600
default 0
of the Underground Suffix AilmentDamage 1 (15-20)% increased Damage with Ailments jewel 1000
abyss_jewel 1000
default 0
Subterranean Prefix MinimumAddedPhysicalDamageVsPoisonedEnemies 1 Adds (7-11) to (12-18) Physical Damage against PoisonedEnemies abyss_jewel 0
jewel 0
gloves 1600
default 0
Subterranean Prefix MinimumAddedPhysicalDamageVsBleedingEnemies 1 Adds (7-11) to (12-18) Physical Damage against Bleeding Enemies abyss_jewel 0
jewel 0
gloves 1600
default 0

Dense Fossil crafting: More Armour, Energy Shield or Evasion modifiers. No Life Modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with life tags by 0 and defences tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil.

Name Generation Type Group Level Stats Spawn Weighting
of the Underground Suffix PhysicalDamageReductionRatingIfYouHaveHitAnEnemyRecently 1 +500 to Armour if you've Hit an Enemy Recently abyss_jewel 0
jewel 0
two_hand_weapon 0
sceptre 1600
mace 1600
axe 1600
sword 1600
default 0
of the Underground Suffix PhysicalDamageReductionRatingIfYouHaveHitAnEnemyRecently 1 +1000 to Armourif you've Hit an Enemy Recently abyss_jewel 0
jewel 0
one_hand_weapon 0
staff 1600
mace 1600
axe 1600
sword 1600
default 0
of the Underground Suffix EvasionRatingIfYouHaveHitAnEnemyRecently 1 +500 to Evasion Rating if Hit an Enemy Recently abyss_jewel 0
jewel 0
two_hand_weapon 0
axe 1600
sword 1600
dagger 1600
claw 1600
default 0
of the Underground Suffix EvasionRatingIfYouHaveHitAnEnemyRecently 1 +1000 to Evasion Rating if Hit an Enemy Recently abyss_jewel 0
jewel 0
one_hand_weapon 0
axe 1600
sword 1600
bow 1600
default 0
of the Underground Suffix EnergyShieldRegenerationRatePerMinuteIfYouHaveHitAnEnemyRecently 1 Regenerate 0.5% of Energy Shieldper second if you've Hit an Enemy Recently abyss_jewel 0
jewel 0
dagger 1600
claw 1600
wand 1600
sceptre 1600
default 0
of the Underground Suffix EnergyShieldRegenerationRatePerMinuteIfYouHaveHitAnEnemyRecently 1 Regenerate 1% of Energy Shield per second if you've Hit an Enemy Recently abyss_jewel 0
jewel 0
staff 2000
default 0
of the Underground Suffix MaximumEnergyShieldFromBodyArmour 1 (20-30)% increased Energy Shield from Body Armour abyss_jewel 0
jewel 0
ring 1600
amulet 1600
belt 1600
default 0
of the Underground Suffix ChanceWhenHitForArmourToBeDoubled 1 20% chance when Hit for double Armour effect abyss_jewel 0
jewel 0
ring 1600
amulet 1600
belt 1600
default 0
of the Underground Suffix AdditionalChanceToEvade 1 +(1-2)% chance to Evade Attack Hits abyss_jewel 0
jewel 0
quiver 1600
ring 1600
amulet 1600
belt 1600
default 0
Subterranean Prefix AllDefences 1 (4-6)% increased Global Defences jewel 1000
abyss_jewel 1000
default 0
of the Underground Suffix PhysicalDamageReductionRatingIfYouHaveHitAnEnemyRecently 1 +(250-300) to Armour if you've Hit an Enemy Recently jewel 300
abyss_jewel 300
default 0
of the Underground Suffix EvasionRatingIfYouHaveHitAnEnemyRecently 1 +(250-300) to Evasion Rating if Hit an Enemy Recently jewel 300
abyss_jewel 300
default 0
of the Underground Suffix EnergyShieldRegenerationRatePerMinuteIfYouHaveHitAnEnemyRecently 1 Regenerate 0.3% of Energy Shieldper second if you've Hit an Enemy Recently jewel 300
abyss_jewel 300
default 0
of the Underground Suffix IncreasedQuality 1 +(10-20)% to Quality local_item_quality 0
abyss_jewel 0
jewel 0
shield 2000
body_armour 2000
default 0
of the Underground Suffix EnergyShieldRegeneration 1 Regenerate 1% of Energy Shield per second abyss_jewel 0
jewel 0
shield 0
body_armour 0
gloves 0
helmet 0
int_armour 2000
dex_int_armour 2000
str_int_armour 2000
default 0
of the Underground Suffix EnergyShieldLeechPermyriad 1 0.3% of Spell Damage Leeched as Energy Shield abyss_jewel 0
jewel 0
shield 0
body_armour 0
boots 0
helmet 0
int_armour 2000
dex_int_armour 2000
str_int_armour 2000
default 0
of the Underground Suffix SpellBlockPercentage 1 (3-4)% Chance to Block Spell Damage abyss_jewel 0
jewel 0
shield 0
body_armour 0
boots 0
gloves 0
int_armour 2000
dex_int_armour 2000
str_int_armour 2000
default 0
of the Underground Suffix ChanceToDodge 1 (3-4)% chance to Dodge AttackHits
(3-4)% chance to Dodge Spell Hits
spell_dodge_mod 0
abyss_jewel 0
jewel 0
shield 0
body_armour 0
gloves 0
helmet 0
dex_armour 2000
dex_int_armour 2000
str_dex_armour 2000
default 0
of the Underground Suffix BlindOnHit 1 (4-6)% Global chance to Blind Enemies on hit abyss_jewel 0
jewel 0
shield 0
body_armour 0
boots 0
helmet 0
dex_armour 2000
dex_int_armour 2000
str_dex_armour 2000
default 0
of the Underground Suffix EvasionOnFullLife 1 (25-50)% increased Global Evasion Ratingwhen on Full Life abyss_jewel 0
jewel 0
shield 0
body_armour 0
gloves 0
boots 0
dex_armour 2000
dex_int_armour 2000
str_dex_armour 2000
default 0
of the Underground Suffix ChanceWhenHitForArmourToBeDoubled 1 (10-20)% chance when Hit for double Armoureffect abyss_jewel 0
jewel 0
shield 0
body_armour 0
gloves 0
helmet 0
str_armour 2000
str_int_armour 2000
str_dex_armour 2000
default 0
of the Underground Suffix BlockPercent 1 (3-4)% Chance to Block Attack Damage abyss_jewel 0
jewel 0
shield 0
body_armour 0
boots 0
helmet 0
str_armour 2000
str_int_armour 2000
str_dex_armour 2000
default 0
of the Underground Suffix FortifyEffect 1 (15-25)% increased Effect of Fortify on you abyss_jewel 0
jewel 0
shield 0
body_armour 0
gloves 0
boots 0
str_armour 2000
str_int_armour 2000
str_dex_armour 2000
default 0

Enchanted Fossil crafting: Has a Labyrinth Enchantment

Enchantments have their own mod slot on items and they no longer use the implicit mod slot. Apply an enchantment on an already enchanted item replace the older with the newer ones. Any level of rarity, even unique items, can be enchanted. Mirrored or corrupted items cannot receive an enchantment.

Enchanted Fossil Crafting Mods

Encrusted Fossil crafting: More sockets. Can have white sockets

By using this fossil the item either keeps the same amount of sockets or it gains more upto its maximum. Even though the fossil has no mod that says More Links, the aforementioned behaviour also works for the amount of links an item has. Note that the order of links on the item might change.

Rolling white sockets onto an item is not guaranteed.

Encrusted Fossil Chance, 6 Link – Crafting

From my experience, there has a 20% chance to get 1 white socket, 3% chance to get 2 white sockets.

Applying Encrusted Fossil on a 6 Link Item

It didn’t kill the 6 Link. It acts like a Chromatic Orb Chromatic Orb, rerolls the socket colours.

Faceted Fossil crafting: More Socketed Gem Level modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with "gem_levels" tag by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
of the Underground Suffix DelveStrengthGemLevel 1 +1 to Level of Socketed Strength Gems abyss_jewel 0
jewel 0
staff 1000
sceptre 1000
mace 1600
axe 1000
sword 1000
bow 750
dagger 750
claw 750
wand 750
str_armour 1600
int_armour 750
dex_armour 750
str_dex_armour 1000
str_int_armour 1000
dex_int_armour 750
str_dex_int_armour 1000
unset_ring 1000
default 0
of the Underground Suffix DelveDexterityGemLevel 1 +1 to Level of Socketed Dexterity Gems abyss_jewel 0
jewel 0
staff 750
sceptre 750
mace 750
axe 1000
sword 1000
bow 1600
dagger 1000
claw 1000
wand 750
str_armour 750
int_armour 750
dex_armour 1600
str_dex_armour 1000
str_int_armour 750
dex_int_armour 1000
str_dex_int_armour 1000
unset_ring 1000
default 0
of the Underground Suffix DelveIntelligenceGemLevel 1 +1 to Level of Socketed Intelligence Gems abyss_jewel 0
jewel 0
staff 1000
sceptre 1000
mace 750
axe 750
sword 750
bow 750
dagger 1000
claw 1000
wand 1600
str_armour 750
int_armour 1600
dex_armour 750
str_dex_armour 750
str_int_armour 1000
dex_int_armour 1000
str_dex_int_armour 1000
unset_ring 1000
default 0

Fractured Fossil crafting: Creates a mirrored copy

Mirror of Kalandra Mirror of Kalandra copies an already-finished item and the result is predictable.. However, Fractured Fossil Fractured Fossil craft a random item and copies it afterward. The result of Fractured Fossil is unpredictable.

Mirror of Kalandra Mirror of Kalandra can be used for any type of items. However, fossil must be socketed into Resonator to influence item crafting. It can only influence normal and rare items.

Fractured Fossil Fractured Fossil is still insanely useful. You could use it on a 6 Link body armour and at worst you have two 6L body armours. At best you have two insane 6L body armours.

Frigid Fossil crafting: More Cold modifiers. No Fire modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with fire tags by 0 and cold tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
Subterranean Prefix ColdResistancePenetration 1 Damage Penetrates (5-7)% Cold Resistance abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
Subterranean Prefix ColdResistancePenetration 1 Damage Penetrates (12-15)% Cold Resistance abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
Subterranean Prefix ColdResistancePenetration 1 Damage Penetrates 1% Cold Resistance jewel 1000
abyss_jewel 1000
default 0
Subterranean Prefix ColdDamageLifeLeech 1 0.2% of Cold Damage Leeched as Life abyss_jewel 0
jewel 0
ring 600
default 0
of the Underground Suffix LocalDisplayNearbyEnemyColdDamageResistance 1 Nearby Enemies have -9% to Cold Resistance
-9% to Cold Resistance
abyss_jewel 0
jewel 0
helmet 2000
default 0
Subterranean Prefix ColdDamagePercentagePrefix 1 (20-30)% increased Cold Damage abyss_jewel 0
jewel 0
amulet 2000
belt 2000
default 0
Subterranean Prefix ColdDamageAvoidance 1 (6-10)% chance to Avoid Cold Damagefrom Hits abyss_jewel 0
jewel 0
body_armour 2000
shield 2000
quiver 2000
default 0
Subterranean Prefix AddedColdDamage 1 Adds (20-25) to (26-35) Cold Damage abyss_jewel 0
jewel 0
gloves 2000
default 0
Subterranean Prefix IncreaseSpecificSocketedGemLevel 1 +2 to Level of Socketed Cold Gems abyss_jewel 0
jewel 0
boots 2000
default 0

Gilded Fossil crafting: Item is overvalued by vendors

This fossil adds an implicit mod with the description Item sells for much more to vendors, which does not overwrite the item’s current implicit. The actual mod is chosen from a selection of random implicit mods that adds various currency items to the vendor price.

The result is RNG. The actual mods rolled on your item have no effect whatsoever. You could have a level 1 Driftwood Wand with "10 spell damage/mana on kill" or other normal items that sells for 2 Mirror Shards. However, the chance depends on the Spawn Weight, just like a gamble.

Glyphic Fossil crafting: Has a Corrupt Essence modifier

Glyphic Fossil counts as if you would use one of the following Essences (note that it chooses one of them at random):

  • Essence of Delirium
  • Essence of Horror
  • Essence of Hysteria
  • Essence of Insanity

You can see the details of Glyphic Fossil Mods.

Hollow Fossil crafting: Has an Abyssal socket

Abyss jewels can be put into normal jewel sockets on your passive skill tree or into an Abyssal Socket on an item. Abyss jewels are always potentially extremely powerful. Therefore, an item with the mod "Has 1 Abyssal Socket" is always expensive.

Name Level Stats Spawn Weighting
of the Underground 1 Has 1 Abyssal Socket abyss_jewel 0, jewel 0, weapon 2000, helmet 2000, boots 2000, gloves 2000, body_armour 2000, default 0

Jagged Fossil crafting: More Physical modifiers. No Chaos modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with chaos tags by 0, poison tags by 0, bleed tags by 5, and physical tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
of the Underground Suffix ChanceToIntimidateOnHit 1 15% chance to Intimidate Enemies for 4 seconds on Hit abyss_jewel 0
jewel 0
weapon 2000
default 0
Subterranean Prefix ReducedPhysicalDamageTaken 1 (3-5)% additional Physical DamageReduction abyss_jewel 0
jewel 0
shield 2000
quiver 2000
default 0
of the Underground Suffix AdditionalPhysicalDamageReductionWhileMoving 1 (3-5)% additional Physical DamageReduction while moving abyss_jewel 0
jewel 0
boots 2000
default 0
Subterranean Prefix AddedPhysicalDamage 1 Adds (6-8) to (9-11) Physical Damage abyss_jewel 0
jewel 0
gloves 2000
default 0
Subterranean Prefix PhysicalDamageLifeLeech 1 0.2% of Physical Damage Leeched as Life abyss_jewel 0
jewel 0
ring 600
default 0
of the Underground Suffix LocalDisplayNearbyEnemyPhysicalDamageTaken 1 Nearby Enemies take 9% increased Physical Damage
9% increased Physical Damage taken
abyss_jewel 0
jewel 0
helmet 2000
default 0
Subterranean Prefix PhysicalDamagePercent 1 (20-30)% increased Global Physical Damage abyss_jewel 0
jewel 0
amulet 2000
belt 2000
default 0
Subterranean Prefix PhysicalDamageOverTimeTaken 1 (2-1)% reduced Physical Damage taken over time jewel 1000
abyss_jewel 1000
default 0
of the Underground Suffix FlatPhysicalDamageTaken 1 -(34-20) Physical Damage taken from Hits abyss_jewel 0
jewel 0
body_armour 2000
default 0
of the Underground Suffix FlatPhysicalDamageTaken 30 -(49-35) Physical Damage taken from Hits abyss_jewel 0
jewel 0
body_armour 2000
default 0
of the Underground Suffix FlatPhysicalDamageTaken 60 -(75-50) Physical Damage taken from Hits abyss_jewel 0
jewel 0
body_armour 2000
default 0

Lucent Fossil crafting: More Mana modifiers. No Speed modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with speed tags by 0 and mana tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Level Stats Spawn Weighting
of the Underground Suffix 1 Socketed Spells have 20% reduced Mana Cost abyss_jewel 0
jewel 0
shield 2000
boots 2000
helmet 2000
default 0
of the Underground Suffix 1 Socketed Attacks have -15 to Total Mana Cost abyss_jewel 0
jewel 0
body_armour 2000
shield 2000
boots 2000
helmet 2000
default 0
of the Underground Suffix 1 Regenerate 0.4% of Mana per second if you've Hit an Enemy Recently abyss_jewel 0
jewel 0
one_hand_weapon 2000
shield 2000
default 0
of the Underground Suffix 1 Regenerate 0.8% of Mana per second if you've Hit an Enemy Recently abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
of the Underground Suffix 1 (50-70)% increased Mana Regeneration Rate while moving abyss_jewel 0
jewel 0
boots 2000
default 0
of the Underground Suffix 1 +(2-4) Mana gained for each Enemy hit by your Attacks abyss_jewel 0
jewel 0
gloves 2000
default 0
of the Underground Suffix 1 Regenerate 0.5% of Mana per second abyss_jewel 0
jewel 0
helmet 2000
default 0
of the Underground Suffix 1 (8-12)% increased Mana Recovery rate abyss_jewel 0
jewel 0
belt 2000
amulet 2000
default 0
of the Underground Suffix 1 (4-6)% reduced Mana Cost of Skills abyss_jewel 0
jewel 0
ring 2000
default 0
of the Underground Suffix 1 (20-30)% increased maximum Mana abyss_jewel 0
jewel 0
quiver 2000
default 0
of the Underground Suffix 1 (2-3)% of Damage taken gained as Mana over 4 seconds when Hit jewel 1000
abyss_jewel 1000
default 0
of the Underground Suffix 1 (5-4)% reduced Mana Reserved abyss_jewel 0
jewel 0
helmet 2000
default 0
Subterranean Prefix 1 (5-10)% of Damage is taken from Mana before Life abyss_jewel 0
jewel 0
body_armour 2000
default 0

Metallic Fossil crafting: More Lightning modifiers. No Physical modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with physical tags by 0, bleed tags by 0, and lightning tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
Subterranean Prefix LightningResistancePenetration 1 Damage Penetrates (5-7)% Lightning Resistance abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
Subterranean Prefix LightningResistancePenetration 1 Damage Penetrates (12-15)% Lightning Resistance abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
Subterranean Prefix LightningResistancePenetration 1 Damage Penetrates 1% Lightning Resistance jewel 1000
abyss_jewel 1000
default 0
Subterranean Prefix LightningDamageLifeLeech 1 0.2% of Lightning DamageLeeched as Life abyss_jewel 0
jewel 0
ring 600
default 0
of the Underground Suffix LocalDisplayNearbyEnemyLightningDamageResistance 1 Nearby Enemies have -9% to Lightning Resistance
-9% to Lightning Resistance
abyss_jewel 0
jewel 0
helmet 2000
default 0
Subterranean Prefix LightningDamagePercentagePrefix 1 (20-30)% increased Lightning Damage abyss_jewel 0
jewel 0
amulet 2000
belt 2000
default 0
Subterranean Prefix LightningDamageAvoidance 1 (6-10)% chance to Avoid Lightning Damage from Hits abyss_jewel 0
jewel 0
body_armour 2000
shield 2000
quiver 2000
default 0
Subterranean Prefix AddedLightningDamage 1 Adds 1 to (48-60) Lightning Damage abyss_jewel 0
jewel 0
gloves 2000
default 0
Subterranean Prefix IncreaseSpecificSocketedGemLevel 1 +2 to Level of SocketedLightning Gems abyss_jewel 0
jewel 0
boots 2000
default 0

Prismatic Fossil crafting: More Elemental modifiers. No Poison or Bleeding modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with bleed tags by 0, poison tags by 0, elemental tags by 10, fire tags by 5, cold tags by 5, and lightning tags by 5.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
Subterranean Prefix LocalAttackReduceEnemyElementalResistance 1 Attacks with this Weapon Penetrate (9-12)% Elemental Resistances abyss_jewel 0
jewel 0
weapon 1000
default 0
of the Underground Suffix SelfStatusAilmentDuration 1 (20-30)% reduced Elemental Ailment Duration on you abyss_jewel 0
jewel 0
shield 2000
body_armour 2000
helmet 2000
gloves 2000
boots 2000
default 0
Subterranean Prefix ElementalPenetration 1 Damage Penetrates (3-5)% Elemental Resistances abyss_jewel 0
jewel 0
quiver 1600
amulet 1600
default 0
of the Underground Suffix ElementalDamagePercent 1 (25-30)% increased Elemental Damage abyss_jewel 0
jewel 0
belt 1600
ring 1600
default 0
Subterranean Prefix ElementalPenetration 1 Damage Penetrates 1% Elemental Resistances abyss_jewel 1600
jewel 1600
default 0
Subterranean Prefix ElementalDamagePercent 1 (19-25)% increased Elemental Damage abyss_jewel 0
jewel 0
one_hand_weapon 1000
default 0
Subterranean Prefix ElementalDamagePercent 25 (26-32)% increased Elemental Damage abyss_jewel 0
jewel 0
one_hand_weapon 1000
default 0
Subterranean Prefix ElementalDamagePercent 50 (33-39)% increased Elemental Damage abyss_jewel 0
jewel 0
one_hand_weapon 1000
default 0
Subterranean Prefix ElementalDamagePercent 75 (40-49)% increased Elemental Damage abyss_jewel 0
jewel 0
one_hand_weapon 1000
default 0
Subterranean Prefix ElementalDamagePercent 1 (37-50)% increased Elemental Damage abyss_jewel 0
jewel 0
two_hand_weapon 1000
default 0
Subterranean Prefix ElementalDamagePercent 25 (51-65)% increased Elemental Damage abyss_jewel 0
jewel 0
two_hand_weapon 1000
default 0
Subterranean Prefix ElementalDamagePercent 50 (66-79)% increased Elemental Damage abyss_jewel 0
jewel 0
two_hand_weapon 1000
default 0
Subterranean Prefix ElementalDamagePercent 75 (80-94)% increased Elemental Damage abyss_jewel 0
jewel 0
two_hand_weapon 1000
default 0

Pristine Fossil crafting: More Life modifiers. No Armour, Energy Shield or Evasion modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with defences tags by 0, "flat_life_regen" tags by .1, and life tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
of the Underground Suffix DamageOnFullLife 1 (50-60)% increased Damage when on Full Life abyss_jewel 0
jewel 0
weapon 2000
default 0
Subterranean Prefix LifeAndPercentLife 1 +(25-40) to maximum Life
(3-5)% increased maximum Life
abyss_jewel 0
jewel 0
body_armour 0
default 0
Subterranean Prefix LifeAndPercentLife 1 +(15-25) to maximum Life
(2-3)% increased maximum Life
abyss_jewel 0
jewel 0
shield 0
boots 0
helmet 0
gloves 0
default 0
of the Underground Suffix LifeRegenerationRatePercentage 1 Regenerate 1% of Life per second abyss_jewel 0
jewel 0
quiver 2000
shield 2000
body_armour 2000
helmet 2000
gloves 2000
boots 2000
default 0
of the Underground Suffix FlaskLifeRecovery 1 (20-30)% increased Life Recovery from Flasks abyss_jewel 0
jewel 0
ring 2000
amulet 2000
belt 2000
default 0
Subterranean Prefix LifeRegenerationRatePercentage 1 Regenerate 0.3% of Life per second jewel 1000
abyss_jewel 1000
default 0

Sanctified Fossil crafting: Numeric modifier values are lucky. High Level modifiers are more common

Lucky means the usual: Rolling twice and picking the higher result.

Luck Effectiveness

With percentage rolls, such as critical strike chance, lucky/unlucky rolls will be up to a 100% more/less modifier, changing linearly towards 0% as critical chance increases. As for damage rolls, the average damage from the roll will be at up to 33% more or less, when the minimum damage is close to zero, but will have a much weaker effect when the minimum damage is closer to the maximum.

Scorched Fossil crafting: More Fire modifiers. No Cold modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with cold tags by 0 and fire tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
Subterranean Prefix FireResistancePenetration 1 Damage Penetrates (5-7)% Fire Resistance abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
Subterranean Prefix FireResistancePenetration 1 Damage Penetrates (12-15)% Fire Resistance abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
Subterranean Prefix FireResistancePenetration 1 Damage Penetrates 1% Fire Resistance jewel 1000
abyss_jewel 1000
default 0
Subterranean Prefix FireDamageLifeLeech 1 0.2% of Fire Damage Leeched as Life abyss_jewel 0
jewel 0
ring 600
default 0
of the Underground Suffix LocalDisplayNearbyEnemyFireDamageResistance 1 Nearby Enemies have -9% to Fire Resistance
-9% to Fire Resistance
abyss_jewel 0
jewel 0
helmet 2000
default 0
Subterranean Prefix FireDamagePercentagePrefix 1 (20-30)% increased Fire Damage abyss_jewel 0
jewel 0
amulet 2000
belt 2000
default 0
Subterranean Prefix FireDamageAvoidance 1 (8-10)% chance to Avoid Fire Damagefrom Hits abyss_jewel 0
jewel 0
body_armour 2000
shield 2000
quiver 2000
default 0
Subterranean Prefix AddedFireDamage 1 Adds (20-25) to (26-35) Fire Damage abyss_jewel 0
jewel 0
gloves 2000
default 0
Subterranean Prefix IncreaseSpecificSocketedGemLevel 1 +2 to Level of Socketed Fire Gems abyss_jewel 0
jewel 0
boots 2000
default 0

Serrated Fossil crafting: More Attack modifiers. Fewer Caster modifiers

Spawn Weight Multipliers: Using this fossil multiplies the spawn weights of all modifiers with caster tags by .15 and attack tags by 10.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Group Level Stats Spawn Weighting
Subterranean Prefix SocketedAttacksDamageFinal 1 Socketed Skills deal 40% more Attack Damage abyss_jewel 0
jewel 0
one_hand_weapon 2000
default 0
Subterranean Prefix SocketedAttacksDamageFinal 1 Socketed Skills deal 20% more Attack Damage abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
of the Underground Suffix SupportedByMaim 1 Socketed Gems are Supported by Level 1 Maim abyss_jewel 0
jewel 0
body_armour 0
default 0
of the Underground Suffix SocketedSkillsAttackSpeed 1 Socketed Skills have 18% increased Attack Speed abyss_jewel 0
jewel 0
gloves 2000
default 0
of the Underground Suffix SocketedAttacksManaCost 1 Socketed Attacks have -15 to Total Mana Cost abyss_jewel 0
jewel 0
body_armour 2000
shield 2000
boots 2000
helmet 2000
default 0
of the Underground Suffix LifeLeech 1 0.3% of Attack Damage Leeched as Life jewel 1000
abyss_jewel 1000
default 0

Shuddering Fossil crafting: More Speed modifiers. No Mana modifiers

Spawn Weight Multipliers Using this fossil multiplies the spawn weights of all modifiers with mana tags by 0 and speed tags by 10. The function of this fossil is the opposite of Lucent Fossil. Using both Shuddering and Lucent Fossils will block mods that have speed or mana tags.

Added Mods: The following mods are added to the crafting pool when using this fossil:

Name Generation Type Level Stats Spawn Weighting
of the Underground Suffix 1 Socketed Skills have 18% increased Cast Speed abyss_jewel 0
jewel 0
gloves 2000
default 0
of the Underground Suffix 1 Socketed Skills have 18% increased Attack Speed abyss_jewel 0
jewel 0
gloves 2000
default 0
of the Underground Suffix 1 10% chance to gain Onslaught for 4 seconds on Kill abyss_jewel 0
jewel 0
one_hand_weapon 2000
shield 2000
default 0
of the Underground Suffix 1 20% chance to gain Onslaught for 4 seconds on Kill abyss_jewel 0
jewel 0
two_hand_weapon 2000
default 0
of the Underground Suffix 1 (15-20)% chance to gain a Frenzy Charge when Hit abyss_jewel 0
jewel 0
body_armour 2000
default 0
of the Underground Suffix 1 (4-6)% increased Movement Speed if you've Hit an Enemy Recently abyss_jewel 0
jewel 0
boots 2000
default 0
of the Underground Suffix 1 (5-10)% increased Attack and Cast Speed if you've Hit an Enemy Recently abyss_jewel 0
jewel 0
gloves 2000
default 0
of the Underground Suffix 1 Ignore all Movement Penalties from Armour abyss_jewel 0
jewel 0
helmet 2000
default 0
of the Underground Suffix 1 Cannot be Chilled or Frozen while moving abyss_jewel 0
jewel 0
amulet 2000
default 0
of the Underground Suffix 1 (15-20)% chance to gain Onslaught when you use a Flask abyss_jewel 0
jewel 0
belt 2000
default 0
of the Underground Suffix 1 Cannot be Shocked or Ignited while moving abyss_jewel 0
jewel 0
ring 2000
default 0
of the Underground Suffix 1 (3-5)% chance to gain a Frenzy Charge when you Hit a Rare or Unique Enemy abyss_jewel 0
jewel 0
quiver 2000
default 0
of the Underground Suffix 1 (5-10)% chance to gain Onslaught when you use a Flask jewel 1000
abyss_jewel 1000
default 0
of the Underground Suffix 74 Minions have (15-30)% increased Movement Speed abyss_jewel 0
jewel 0
quiver 2000
ring 2000
amulet 2000
default 0
of the Underground Suffix 1 Minions have (4-6)% increased Attack Speed
Minions have (4-6)% increased Cast Speed
abyss_jewel 0
jewel 2000
default 0

Tangled Fossil crafting: Can have any Fossil modifiers

Tangled Fossil is a general fossil currency item. Use this fossil to craft an item, you get a fossil modifier randomly.

PoE Resonators

You can use Fossils crafting special Delve modifiers. By socketing PoE fossils into resonators to modify the crafting behavior in specific ways.

  • Fossils + Resonator = Crafting Mods

Delve Stackable Socketable Currency or resonators is a new item class introduced in the delve league. They are currency items that allow crafting rare items similar to Orb of Alchemy Orb of Alchemy or Chaos Orb Chaos Orb, but can be socketed with Fossils in order to change their crafting behavior. Fossils cannot be unsocketed once all the resonator sockets are filled.

WARNING: Despite the similar wording to chaos orbs, using a fossil + resonator on an item with a meta-crafting mod (such as “prefixes cannot be changed” or “cannot roll caster mods”) will ignore that mod and overwrite existing prefixes and suffixes ignoring any restrictions.

There is an older variant of this item class available Delve Socketable Currency which will be converted to the new item class upon pickup. The old variant is no longer obtainable.

For PoE 3.8, Resonators can now stack. They have a stack size of 10 in normal Stash Tabs and the inventory, and the Primitive Resonators can stack to 5000 in the Currency Tab.

Item Drop
Level
Effect(s) Price
Potent Alchemical Resonator Potent Alchemical Resonator 1 Upgrades a normal item to a rare item 1x Orb of Alchemy Orb of Alchemy
Potent Chaotic Resonator Potent Chaotic Resonator 34 Reforges a rare item with new random modifiers 1x Chaos Orb Chaos Orb
Powerful Alchemical Resonator Powerful Alchemical Resonator 34 Upgrades a normal item to a rare item 1x Orb of Fusing Orb of Fusing
Powerful Chaotic Resonator Powerful Chaotic Resonator 34 Reforges a rare item with new random modifiers 2x Orb of Alteration Orb of Alteration
Prime Alchemical Resonator Prime Alchemical Resonator 68 Upgrades a normal item to a rare item 10x Chaos Orb Chaos Orb
Prime Chaotic Resonator Prime Chaotic Resonator 68 Reforges a rare item with new random modifiers 20x Chaos Orb Chaos Orb
Primitive Alchemical Resonator Primitive Alchemical Resonator 1 Upgrades a normal item to a rare item 1x Cartographer’s Chisel Cartographer’s Chisel
Primitive Chaotic Resonator Primitive Chaotic Resonator 34 Reforges a rare item with new random modifiers 2x Orb of Fusing Orb of Fusing

I love fossil crafting and the delve mechanics completely. I really hope it stays in some form. I don't even think it's overpowered at the current rarity levels of fossils.

Related PoE Currency, Gem, Skills Build Guide