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Item socket

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An example of a bow with three linked sockets; two of which are occupied by skill gems.

Sockets are a mechanism on equipment into which active and support skill gems with a matching colour can be placed. Individual sockets can be linked to each other which is required for support skill gems to provide benefits to any linked active skill gem.

Colours

Each socket has one of four colours:

Skill gems have to be placed into a socket with the corresponding colour with the exception of white gems and sockets, which can be placed into a socket of any colour or take a gem of any colour respectively.

The random choice of colour for sockets is weighted based upon the magnitude of the relevant attributes (strength, dexterity, intelligence) required to use the item. For example, a low strength requirement (low base-level) pure strength armour item has a higher probability of rolling off-color sockets than a high strength requirement (high base-level) pure strength armour.

White sockets can be obtained through corruption by using a Vaal OrbVaal OrbStack Size: 10Corrupts an item, modifying it unpredictablyRight click this item then left click an item to corrupt it. Corrupted items cannot be modified again.
Shift click to unstack.
at a 25% chance.[1]

The colour of sockets can be changed by Chromatic OrbChromatic OrbStack Size: 20Reforges the colour of sockets on an itemRight click this item then left click a socketed item to apply it.
Shift click to unstack.
reforging or by using the crafting bench provided by Vorici.

Number of sockets

The number of possible sockets on equipment is based on the item level as well as the type of the equipment being used.

The number of sockets can be changed by Jeweller's OrbJeweller's OrbStack Size: 20Reforges the number of sockets on an itemRight click this item then left click a socketed item to apply it. The item's quality increases the chances of obtaining more sockets.
Shift click to unstack.
reforging or by using the crafting bench provided by Vorici.

Maximum number of sockets by equipment type

Some items have exceptions to these rules.

Item level

Number of sockets Minimum item level First vendor
1 1 Act 1
2 1 Act 1
3 2 Act 1
4 25 Act 3
5 35 Act 4
6 50 Act 6

The item level item is generally applicable, but note that there are a few cases where the restriction does not apply:

  • Hillok, upon death, always drops a specific weapon with three differently coloured sockets, wich is dependent on your class.
  • Tabula RasaTabula Rasa
    Simple Robe
    Quality: +20%3% reduced Movement Speed (Hidden)Item has no level requirement and Energy Shield (Hidden)
    Item has 6 White Sockets and is fully linked (Hidden)
    always has 6 linked white sockets.
  • Items from strongboxes with of Complexity [?] affix
  • Vorici can master craft sockets regardless of the item's item level.

Links

Sockets can be linked to other sockets in the same item. In order to provide their benefits support skill gems have to be placed in sockets linked to other sockets containing active skill gems.

Multiple support skill gems of the same type can only be applied once to an active skill gem, however it is possible to apply a single support skill gem to multiple active skill gems at once. If multiple support gems of the same type are socketed in the same link, the highest level support is used.

For example, the two skills FireballFireballProjectile, Spell, AoE, Fire
Radius: 9
Mana Cost: (6 to 26)
Cast Time: 0.85 sec
Critical Strike Chance: 6.00%
Projectile Speed: 1040
Unleashes a ball of fire towards a target which explodes, damaging nearby foes.Per 1% Quality:
0.5% chance to Ignite enemies
Deals (7-739) to (10-1109) Fire Damage
(20-39)% chance to Ignite enemies
+(0-3) to radius
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Fireball skill icon.png
and Freezing PulseFreezing PulseProjectile, Spell, Cold
Mana Cost: (4 to 18)
Cast Time: 0.65 sec
Critical Strike Chance: 6.00%
Damage Effectiveness: 125%
Projectile Speed: 1800
An icy projectile which has a chance to freeze enemies it passes through. The projectile fades quickly, reducing damage and freezing chance until it runs out of time and dissipates completely.Per 1% Quality:
2% increased Projectile Speed
Deals (7-689) to (11-1034) Cold Damage
Projectiles Pierce all Targets
(0-19)% increased Projectile Speed
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Freezing Pulse skill icon.png
may be linked with the support skill Elemental Proliferation SupportElemental Proliferation SupportCold, Fire, Lightning, Support, AoE
Icon: S
Mana Multiplier: 110%
Supports any skill that hits enemies, or could otherwise apply elemental ailments.Per 1% Quality:
0.5% increased Duration of Elemental Ailments on Enemies
Elemental Ailments caused by Supported Skills spread to other enemies in a Radius of 10
20% chance to Freeze, Shock and Ignite
(0-19)% increased Duration of Elemental Ailments on Enemies
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
in a three linked item, or Freezing PulseFreezing PulseProjectile, Spell, Cold
Mana Cost: (4 to 18)
Cast Time: 0.65 sec
Critical Strike Chance: 6.00%
Damage Effectiveness: 125%
Projectile Speed: 1800
An icy projectile which has a chance to freeze enemies it passes through. The projectile fades quickly, reducing damage and freezing chance until it runs out of time and dissipates completely.Per 1% Quality:
2% increased Projectile Speed
Deals (7-689) to (11-1034) Cold Damage
Projectiles Pierce all Targets
(0-19)% increased Projectile Speed
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Freezing Pulse skill icon.png
may be replaced by Chance to Ignite SupportChance to Ignite SupportFire, Support
Icon: i
Mana Multiplier: 120%
Requires Level 8Supports any skill that hits enemies.Per 1% Quality:
Supported Skills deal 0.5% increased Fire Damage
Supported Skills have (30-49)% chance to Ignite
Supported Skills deal (10-29)% more Fire Damage
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
to enhance the FireballFireballProjectile, Spell, AoE, Fire
Radius: 9
Mana Cost: (6 to 26)
Cast Time: 0.85 sec
Critical Strike Chance: 6.00%
Projectile Speed: 1040
Unleashes a ball of fire towards a target which explodes, damaging nearby foes.Per 1% Quality:
0.5% chance to Ignite enemies
Deals (7-739) to (10-1109) Fire Damage
(20-39)% chance to Ignite enemies
+(0-3) to radius
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Fireball skill icon.png
even more. However linking two instances of Elemental Proliferation SupportElemental Proliferation SupportCold, Fire, Lightning, Support, AoE
Icon: S
Mana Multiplier: 110%
Supports any skill that hits enemies, or could otherwise apply elemental ailments.Per 1% Quality:
0.5% increased Duration of Elemental Ailments on Enemies
Elemental Ailments caused by Supported Skills spread to other enemies in a Radius of 10
20% chance to Freeze, Shock and Ignite
(0-19)% increased Duration of Elemental Ailments on Enemies
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
will only provide the bonus of the highest level one.

The number of links can be reforged using an Orb of FusingOrb of FusingStack Size: 20Reforges the links between sockets on an itemRight click this item then left click a socketed item to apply it. The item's quality increases the chances of obtaining more links.
Shift click to unstack.
or with Vorici's crafting bench.

Order

Generally the order in which skill gems are linked only holds importance for trigger gems and for rounding the mana cost. The order for sockets used is:

1 2
4 3
5 6

If multiple trigger gems are socketed in several equipped items the order will be:

Main hand ⇒ Amulet ⇒ Helm ⇒ Off hand ⇒ Body armour ⇒ Gloves ⇒ Boots

Items with non-standard interactions

Base items

  • Unset RingsUnset RingRequires Level 5Has 1 Socket have 1 socket instead of none.
  • Black Maw TalismansBlack Maw TalismanTalisman Tier: 1Has 1 SocketCorruptedThe First Ones stalk with us
    upon this lifelong hunt,
    and cast their contempt
    upon those that would make us their prey.
    - The Wolven King
    have 1 socket instead of none.
  • Gnarled BranchGnarled BranchStaves
    Physical Damage: 817
    Critical Strike Chance: 6.00%
    Attacks per Second: 1.30
    Weapon Range: 11
    Requires Level 4, 12 Str, 12 Int18% Chance to Block
    can only have up to 3 sockets, despite being a two-handed weapon.
  • Fishing RodFishing RodFishing Rods
    Physical Damage: 713
    Critical Strike Chance: 5.00%
    Attacks per Second: 1.20
    Weapon Range: 11
    Requires 8 Str, 8 Dex
    can only have up to 4 sockets, despite being a two-handed weapon.

Unique items

  • The Goddess UnleashedThe Goddess Unleashed
    Eternal Sword
    One Hand Swords
    Quality: +20%
    Physical Damage: (52.8 to 56.4)(121.2 to 160.8)
    Critical Strike Chance: (7.20% to 8.30%)
    Attacks per Second: 1.50
    Weapon Range: 9
    Requires Level 52, 104 Str, 122 Dex+475 to Accuracy RatingUses both hand slots
    Item has 6 Sockets and is fully linked (Hidden)
    Adds (3-6) to (33-66) Physical Damage
    (44-66)% increased Critical Strike Chance
    33% increased Ignite Duration on Enemies
    (66-99)% of Sword Physical Damage Added as Fire Damage
    Gain Her Blessing for 3 seconds when you Ignite an Enemy
    33% chance to Blind nearby Enemies when gaining Her Blessing
    Cannot be Frozen, Chilled or Ignited with Her Blessing
    20% increased Attack and Movement Speed with Her Blessing
    As a maiden I was bound; as a crone was I scorned
    Promised power rarely found, delivered fury fairly thorned.
    Not enough?...Fine. Now I am become both and another
    To take your hand and cradle your talents, not smother
    The consummate flames. So hush, dear, say not a word.
    Bequeathed, betrayed...beloved. At last, I am the third.
    always has 6 linked sockets. It is the only one-handed weapon that can have more than three sockets.
  • Kaom's HeartKaom's Heart
    Glorious Plate
    Quality: +20%
    Armour: 931
    Requires Level 68, 191 StrHas no Sockets
    +500 to maximum Life
    (20-40)% increased Fire Damage
    The warrior who
    fears will fall.
    and Kaom's RootsKaom's Roots
    Titan Greaves
    Quality: +20%
    Armour: 289
    Requires Level 68, 120 StrHas no Sockets
    Cannot be Knocked Back
    +(150-200) to maximum Life
    You cannot be slowed to below base speed
    Unwavering Stance
    Don't flinch. It's a waste of good hitting time.
    do not have any sockets.
  • Malachai's ArtificeMalachai's Artifice
    Unset Ring
    Requires Level 5Has 1 SocketSocketed Gems have Elemental Equilibrium
    Socketed Gems have 25% reduced Elemental Equilibrium effect
    -20% to all Elemental Resistances
    +(75-100)% to Fire Resistance when Socketed with a Red Gem
    +(75-100)% to Cold Resistance when Socketed with a Green Gem
    +(75-100)% to Lightning Resistance when Socketed with a Blue Gem
    All Sockets are White
    When the wind blows,
    Know which way to bend
    and watch the others break.
    always has a white socket and grants stats based on the colour of the gem socketed into the item.
  • Prismatic EclipsePrismatic Eclipse
    Twilight Blade
    One Hand Swords
    Quality: +20%
    Physical Damage: (60 to 72)(140.4 to 151.2)
    Critical Strike Chance: 5.00%
    Attacks per Second: 1.30
    Weapon Range: 9
    Requires Level 53, 91 Str, 91 Dex40% increased Accuracy Rating8% additional Block Chance while Dual Wielding
    Adds (20-30) to (31-40) Physical Damage
    25% increased Physical Damage with Weapons per Red Socket
    12% increased Global Attack Speed per Green Socket
    0.4% of Physical Attack Damage Leeched as Mana per Blue Socket
    +2 to Melee Weapon Range per White Socket
    "A raging Solaris seared and contorted the orb's surface.
    A despairing Lunaris filled the scars with her tears.
    Yet Viridi remained, trapped within, forever more."
    - Azmerian Creation Myth
    and ScaevaScaeva
    Gladius
    One Hand Swords
    Quality: +20%
    Physical Damage: (154.8 to 175.2)(243.6 to 278.4)
    Critical Strike Chance: (5.75% to 6.25%)
    Attacks per Second: 1.30
    Weapon Range: 9
    Requires Level 60, 113 Str, 113 Dex40% increased Accuracy RatingAdds (75-92) to (125-154) Physical Damage
    (15-25)% increased Critical Strike Chance
    0.3% of Physical Attack Damage Leeched as Life per Red Socket
    +10% to Global Critical Strike Multiplier per Green Socket
    0.3% of Physical Attack Damage Leeched as Mana per Blue Socket
    8% increased Global Defences per White Socket
    (60-80)% increased Critical Strike Chance when in Main Hand
    8% additional chance to Block when in Off Hand
    Even from the back rows,
    the whistling steel was mesmerising.
    They watched the dance in the arena dust, silent as the dead.
    A spell only broken by the spilling of blood.
    grant stats based on the colour of the sockets in the item.
  • Tabula RasaTabula Rasa
    Simple Robe
    Quality: +20%3% reduced Movement Speed (Hidden)Item has no level requirement and Energy Shield (Hidden)
    Item has 6 White Sockets and is fully linked (Hidden)
    always has 6 white linked sockets.
  • Skin of the LoyalSkin of the Loyal
    Simple Robe
    Quality: +20%3% reduced Movement Speed (Hidden)Item has no level requirement and Energy Shield (Hidden)
    Sockets cannot be modified
    +1 to Level of Socketed Gems
    100% increased Global Defences
    We happily give our limbs.
    A net woven to keep safe the bones of the Lords.

    This item can be transformed with a Blessing of Chayula
    and Skin of the LordsSkin of the Lords
    Simple Robe
    Quality: +20%3% reduced Movement Speed (Hidden)Item has no level requirement and Energy Shield (Hidden)
    Sockets cannot be modified
    +1 to Level of Socketed Gems
    100% increased Global Defences
    You can only Socket Corrupted Gems in this item
    <Random Keystone>
    Corrupted
    The Lords are chosen so carefully.
    Only they may grace His flesh.
    always come with six linked sockets that are randomly colored. These cannot be modified with Vorici's Artisan's Bench.
  • Dialla's MalefactionDialla's Malefaction
    Sage's Robe
    Quality: +20%
    Energy Shield: 88
    Requires Level 37, 104 Int3% reduced Movement Speed (Hidden)Gems can be socketed in this item ignoring socket colour
    Gems socketed in red sockets have +1 to level
    Gems socketed in green sockets have +10% quality
    Gems socketed in blue sockets gain 25% increased experience
    has no attribute requirements
    He took me by my hand, promised me power beyond compare.
    But i did not do it for power.
    I did it for love.
    And I'd do it again in an instant.
    does not need to have the socketed gems match the socket colors, effectively functioning as white sockets.

Unique items from races

All Descent: Champions unique items have three white, linked sockets (except for Slivers of ProvidenceSlivers of Providence
Serrated Arrow Quiver
Adds 1 to 4 Physical Damage to Attacks with Bows+10% to all Elemental Resistances
50% increased Duration of Elemental Ailments on Enemies
10% chance to Freeze, Shock and Ignite
Gain 25% of Bow Physical Damage as Extra Damage of an Element
Into darkness, horror, madness...
So goes the descent.
and Chains of TimeChains of Time
Rustic Sash
(12-24)% increased Physical Damage10% increased Elemental Damage
30% increased Life Recovery from Flasks
30% increased Mana Recovery from Flasks
30% reduced Flask effect duration
Into darkness, horror, madness...
So goes the descent.
).

Related divination cards

There are divination cards that grant items with a high number of sockets and links.

  • Bowyer's DreamBowyer's Dream6Six-Link Harbinger Bow
    Item Level: 91
    If this is my dream, I don't wish to wake.
  • The Celestial JusticarThe Celestial Justicar6Six-Link Astral PlateWrapped in the glory of the heavens, she comes to mete out justice for the fallen.
  • The Chains that BindThe Chains that Bind11Six-Link Body ArmourScarier than any criminal is an innocent man in chains, for when he breaks free, his revenge will be justified.
  • The Dapper ProdigyThe Dapper Prodigy6Six-Link Body Armour
    Item Level: 100
    "Many believe murder is a grisly, grim, and grotesque crime. Then there are those who simply make art of it."
  • The Dark MageThe Dark Mage6Six-Link Staff
    Item Level: 55
    With staff in hand
    and wrath in heart,
    your soul and corpse
    shall surely part.
  • Emperor of PurityEmperor of Purity7Six-Link Holy Chainmail
    Item Level: 60
    True to his title,
    Voll, newly crowned,
    had many of the
    Eternal Empire's signature
    extravagances destroyed.
  • The EtherealThe Ethereal7Six-Link Vaal Regalia"Long ago, people looked to the stars, believing they influenced us. Soon, it will be us who influence the stars."
    - Doryani, Queen's Thaumaturge
  • The Flora's GiftThe Flora's Gift5Five-Link Staff
    Item Level: 66
    Sturdy and strong,
    grown from the stream.
    The Flora that live here,
    A combatant's dream.
  • The WarlordThe Warlord6Six-Link Coronal Maul
    Item Level: 83
    To cure the Goddess,
    and break the chains of corruption,
    you must shatter the world.

Related Prophecies

  • The Jeweller's TouchThe Jeweller's TouchThe Jeweller leaves five fingerprints and connects them with a single thread.You will create a fully-linked five-socket item with a single Jeweller's OrbRight-click to add this prophecy to your character.Seal cost:
    3x Silver Coin
    will cause the next Jeweller's OrbJeweller's OrbStack Size: 20Reforges the number of sockets on an itemRight click this item then left click a socketed item to apply it. The item's quality increases the chances of obtaining more sockets.
    Shift click to unstack.
    used on an appropriate item to make that item become a fully-linked five-socket item.
  • Fated ConnectionsFated ConnectionsFive and fewer stand alone, but six draws them together.You will create a fully-linked six-socket item using only Jeweller's Orbs.Right-click to add this prophecy to your character.Seal cost:
    1x Silver Coin
    will cause the next Jeweller's OrbJeweller's OrbStack Size: 20Reforges the number of sockets on an itemRight click this item then left click a socketed item to apply it. The item's quality increases the chances of obtaining more sockets.
    Shift click to unstack.
    that resulted in an item having 6 sockets to also make those sockets fully linked.

Developer Information

Relevant information about the sockets can be found in the "Sockets" section of .ot files (based on which files the item in question inherits).

The format used for sockets is

   <number of sockets>:<item level requirement>:<spawn weighting>

The socket colours are commonly represented as:

Colour Letter Code Numerical ID
red R 1
green G 2
blue B 3
white W

References

  1. chris_wilson (July 16, 2015). "Chris Wilson on chances of corrupting White Sockets". Path of Exile Subreddit. Retrieved July 16, 2015.