Fossil - Path of Exile

How to use a Fossil

Place a Fossil into a Resonator. Then use it to craft an item.

1. Place a Fossil into a Resonator



2. Use it to craft an item

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	More Chaos modifiers No Lightning modifiers	lightning x0% chaos x1000% poison x500%	Fungal Caverns, Abyssal Depths	1
Aetheric Fossil	More Caster modifiers Fewer Attack modifiers	attack x15% caster x1000%	Sulphur Vents	1
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
Deft Fossil	More Critical modifiers No Attribute modifiers	attribute x0% critical x1000%		1
Fundamental Fossil	More Attribute modifiers No Critical modifiers	critical x0% attribute x1000%		1
Bound Fossil	More Minion or Aura modifiers	minion x1000% aura x1000%	Petrified Forest, Abyssal Depths	1
Corroded Fossil	More 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	More Armour, Energy Shield or Evasion modifiers No Life Modifiers	life x0% defences x1000%	Fungal Cavern, Petrified Forest	1
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	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	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	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	More Cold modifiers No Fire modifiers	fire x0% cold x1000%	Frozen Hollow	1
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	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	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	More Physical modifiers No Chaos modifiers	chaos x0% poison x0% physical x1000% bleed x500%	Petrified Forest	1
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	More Lightning modifiers No Physical modifiers	physical x0% bleed x0% lightning x1000%	Sulphur Vents	1
Perfect Fossil	Improved Quality	Sets quality randomly range from 15% to 30%	Sulphur Vents, Fungal Caverns	1
Prismatic Fossil	More Elemental modifiers No Poison or Bleeding modifiers	bleed x0% poison x0% fire x500% cold x500% lightning x500% elemental x1000%	Magma Fissure, Frozen Hollow	1
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	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	More Fire modifiers No Cold modifiers	cold x0% fire x1000%	Magma Fissure	1
Serrated Fossil	More Attack modifiers Fewer Caster modifiers	caster x15% attack x1000%	Frozen Hollow	1
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	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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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%

Perfect Fossil Crafting: Improved Quality

How does Perfect Fossil work? 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 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 to craft a 30% quality item.
• 2. Applying Orb of Scouring to change the item into a normal item.
• 3. Using thousands of 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.

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

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 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 or  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	1	Upgrades a normal item to a rare item	1x Orb of Alchemy
Potent Chaotic Resonator	34	Reforges a rare item with new random modifiers	1x Chaos Orb
Powerful Alchemical Resonator	34	Upgrades a normal item to a rare item	1x Orb of Fusing
Powerful Chaotic Resonator	34	Reforges a rare item with new random modifiers	2x Orb of Alteration
Prime Alchemical Resonator	68	Upgrades a normal item to a rare item	10x Chaos Orb
Prime Chaotic Resonator	68	Reforges a rare item with new random modifiers	20x Chaos Orb
Primitive Alchemical Resonator	1	Upgrades a normal item to a rare item	1x Cartographer’s Chisel
Primitive Chaotic Resonator	34	Reforges a rare item with new random modifiers	2x 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.