Path of Exile 2 Gemcutter's Prism

Gemcutter's Prism

Effect：a rare item to improve the quality of a gem

Obtaining：
1. Obtained from slain enemies or found in an Artisan's Strongbox.
2. Sell a gem with 20% quality to any vendor for a Gemcutter's Prism.
3. Sell any number of gems whose total quality is at least 40% to any vendor for a Gemcutter's Prism.

Item acquisition：
1. Gemcutter's Prism can also be obtained from the following vendor recipes: 

Spending：
Gemcutter's Prism, rare items, is not a good choice to apply them to gems that have little or no quality. However, selling one with a level 20 gem to any vendor will give you a 20% quality, level 1 version of that same gem. Because it is possible to level many gems at once, it is generally considered a cost-efficient method of obtaining 20% quality gems if the player does not have the means to obtain a mass of Gemcutter's Prisms. 
Gemcutter's Prism are frequently used during higher levels, and the improve of the quality of skill gems always improve a skill's quality.
Both active and support skill gems may have quality. Every skill is affected by quality differently, but frequently it somehow improves the damage dealt with the skill. Buffs and curses, obviously, do not have their damage improved. Even those that do have their damage improved will see different rates of improvement for a given amount of quality.
The quality of skill gems may be improved with a Gemcutter's Prism. These upgrades always improve a skill's quality by 1%. Alternatively, a level 20 skill gem and a Gemcutter's Prismcan be sold for a level 1 gem with 20% quality.
It is possible to get a gem's quality above 20% through corruption and certain gear.


Animate Weapon
Minions have 2% increased Movement Speed

Arctic Armour
1% increased Skill Effect Duration

Barrage
0.5% increased Projectile Damage

Bear Trap
1% increased Physical Damage

Blade Flurry
0.5% increased Attack Speed

Blade Vortex
0.5% increased Area of Effect

Bladefall
0.5% increased Area of Effect

Blast Rain
0.5% increased Area of Effect

Blink Arrow
1.5% increased Arrow Speed

Blood Rage
0.25% increased Attack Speed

Burning Arrow
3% increased Ignite Duration on enemies

Caustic Arrow
0.5% increased Area of Effect

Charged Dash
0.5% increased Attack Speed

Cremation
1% increased Fire Damage

Cyclone
0.5% increased Area of Effect

Desecrate
1% increased Cast Speed

Detonate Dead
0.5% increased Cast Speed

Double Strike
0.5% increased Attack Speed

Dual Strike
0.5% increased Attack Speed

Elemental Hit
1% increased Elemental Damage

Ethereal Knives
1% increased Projectile Speed

Explosive Arrow
1% chance to Ignite enemies

Explosive Trap
0.5% increased Area of Effect

Fire Trap
1% increased Fire Damage

Flamethrower Trap
1% increased Fire Damage

Flicker Strike
1% increased Damage

Freeze Mine
0.5% increased Area of Effect

Frenzy
0.5% increased Attack Speed

Frost Blades
1% increased Projectile Damage

Grace
1% increased Area of Effect

Haste
1% increased Area of Effect

Hatred
1% increased Area of Effect

Herald of Agony
1% increased Minion Movement Speed

Herald of Ice
0.75% increased Cold Damage

Ice Shot
1% increased Cold Damage

Ice Trap
0.5% increased Area of Effect

Lacerate
0.5% increased Area of Effect

Lancing Steel
1% chance to Impale Enemies on Hit

Lightning Arrow
0.5% chance to Shock enemies

Lightning Strike
1% increased Lightning Damage

Mirror Arrow
1.5% increased Arrow Speed

Phase Run
0.5% increased Movement Speed

Poacher's Mark
Cursed enemies have a 0.5% chance to grant a Frenzy Charge when slain

Projectile Weakness
Cursed enemies take 0.5% increased Damage from Projectile Hits

Puncture
1% increased Skill Effect Duration

Purity of Ice
1% increased Area of Effect

Rain of Arrows
0.5% increased Area of Effect

Reave
0.5% increased Attack Speed

Riposte
1% increased Damage

Scourge Arrow
1% increased Projectile Speed

Seismic Trap
1% increased Physical Damage

Shattering Steel
1% increased Impale Effect

Shrapnel Shot
0.5% increased Area of Effect

Siege Ballista
1% increased Totem Placement speed

Smoke Mine
1% increased Area of Effect

Spectral Shield Throw
1% increased Projectile Damage

Spectral Throw
0.5% increased Attack Speed

Split Arrow
0.5% increased Attack Speed

Summon Ice Golem
1% increased Minion Maximum Life
1% increased Minion Damage

Temporal Chains
Cursed Normal and Magic Enemies have 0.5% less Action Speed

Tornado Shot
1% increased Projectile Damage

Toxic Rain
0.5% increased Area of Effect

Unearth
0.5% increased Cast Speed

Vaal Blade Vortex
0.5% increased Area of Effect

Vaal Burning Arrow
3% increased Ignite Duration on enemies

Vaal Cyclone
0.5% increased Area of Effect

Vaal Detonate Dead
1% increased Area Damage

Vaal Double Strike
0.5% increased Attack Speed

Vaal Grace
1% increased Area of Effect

Vaal Haste
1% increased Area of Effect

Vaal Impurity of Ice
1% increased Area of Effect

Vaal Lightning Strike
1% increased Lightning Damage

Vaal Rain of Arrows
0.5% increased Area of Effect

Vaal Reave
0.5% increased Attack Speed

Vaal Spectral Throw
0.5% increased Attack Speed

Viper Strike
0.5% increased Attack Speed

Volatile Dead
0.5% increased Area of Effect

Whirling Blades
0.5% increased Attack Speed

Wild Strike
1% increased Elemental Damage

Arc
0.5% chance to Shock enemies

Arctic Breath
0.5% increased Area of Effect

Armageddon Brand
0.5% increased Cast Speed

Assassin's Mark
Cursed enemies have a 0.5% chance to grant a Power Charge when slain

Ball Lightning
1% increased Lightning Damage

Bane
Applied Curses have 0.5% increased Effect

Blight
0.5% increased Area of Effect

Bodyswap
0.5% increased Cast Speed

Bone Offering
0.5% increased Skill Effect Duration

Brand Recall
Brands gain 1% increased Attachment Range

Clarity
1% increased Area of Effect

Cold Snap
0.5% increased Area of Effect

Conductivity
Shocks on Cursed enemies have 1% increased Duration

Contagion
0.5% increased Area of Effect

Conversion Trap
1% increased Skill Effect Duration

Convocation
1% increased Skill Effect Duration
1% increased Cooldown Recovery Speed

Dark Pact
0.5% increased Area of Effect

Despair
Cursed enemies take 0.5% increased Damage from Damage Over Time effects

Discharge
0.5% increased Area of Effect

Discipline
1% increased Area of Effect

Divine Ire
0.5% increased Area of Effect

Elemental Weakness
Cursed enemies have -0.25% to Elemental Resistances

Enfeeble
Cursed enemies have 0.2% reduced Accuracy Rating
Cursed enemies have 0.5% reduced Critical Strike Chance

Essence Drain
1% increased Chaos Damage

Fire Nova Mine
1% increased Fire Damage

Fireball
0.5% chance to Ignite enemies

Firestorm
1% increased Damage

Flame Dash
1% increased Cooldown Recovery Speed

Flame Surge
0.5% increased Cast Speed

Flameblast
1% increased Damage

Flammability
Ignite on Cursed enemies has 0.5% increased Duration

Flesh Offering
0.5% increased Skill Effect Duration

Freezing Pulse
2% increased Projectile Speed

Frost Bomb
1% increased Cold Damage

Frost Wall
1% increased Skill Effect Duration

Frostbite
Freezes on Cursed enemies have 1% increased Duration

Frostbolt
1% increased Cold Damage

Glacial Cascade
1% increased Damage

Herald of Thunder
0.75% increased Lightning Damage

Ice Nova
0.5% increased Area of Effect

Ice Spear
2% increased Projectile Speed

Incinerate
1% increased Fire Damage

Kinetic Blast
0.5% increased Area of Effect

Lightning Spire Trap
1% chance to Shock enemies

Lightning Tendrils
1% increased Lightning Damage

Lightning Trap
1% increased Lightning Damage
0.5% increased Effect of Shock

Lightning Warp
1% increased Cast Speed

Magma Orb
1% increased Damage

Malevolence
1% increased Area of Effect

Orb of Storms
1% increased Lightning Damage

Power Siphon
1% increased Damage

Purifying Flame
0.5% increased Area of Effect

Purity of Elements
1% increased Area of Effect

Purity of Lightning
1% increased Area of Effect

Raise Spectre
1% increased Minion Movement Speed

Raise Zombie
1% increased Minion Maximum Life
1% increased Minion Movement Speed

Righteous Fire
1% increased Spell Damage

Scorching Ray
0.5% increased beam length

Shock Nova
2% increased Shock Duration on enemies

Siphoning Trap
1% increased Effect of Chill

Soulrend
1% increased Chaos Damage

Spark
1% increased Projectile Speed

Spirit Offering
0.5% increased Skill Effect Duration

Storm Brand
0.5% increased Cast Speed

Storm Burst
0.5% increased Area of Effect

Storm Call
0.5% increased Area of Effect

Summon Chaos Golem
1% increased Minion Maximum Life
1% increased Minion Damage

Summon Holy Relic
Minions have 0.5% increased Area of Effect

Summon Lightning Golem
1% increased Minion Maximum Life
1% increased Minion Damage

Summon Raging Spirit
1% increased Minion Movement Speed

Summon Skeleton
Minions deal 1% increased Damage

Tempest Shield
1% increased Lightning Damage

Vaal Arc
1.5% increased Shock Duration on enemies

Vaal Blight
0.5% increased Area of Effect

Vaal Clarity
1% increased Area of Effect

Vaal Cold Snap
0.5% increased Area of Effect

Vaal Discipline
1% increased Area of Effect

Vaal Fireball
0.5% chance to Ignite enemies

Vaal Flameblast
1% increased Damage

Vaal Ice Nova
0.5% increased Area of Effect

Vaal Impurity of Lightning
1% increased Area of Effect

Vaal Lightning Trap
Shocked Ground causes 0.25% increased Damage taken

Vaal Power Siphon
1% increased Damage

Vaal Righteous Fire
1% increased Burning Damage

Vaal Spark
1% increased Projectile Speed

Vaal Storm Call
0.5% increased Area of Effect

Vaal Summon Skeletons
Minions deal 1% increased Damage

Vortex
0.5% increased Area of Effect

Wave of Conviction
1% increased Elemental Damage

Winter Orb
0.5% increased Cast Speed

Wither
1% increased Skill Effect Duration

Wrath
1% increased Area of Effect

Zealotry
1% increased Area of Effect

Detonate Mines
5% increased Cast Speed

Portal
3% increased Cast Speed

Vaal Breach
3% increased Cast Speed

Abyssal Cry
1% increased Skill Effect Duration

Ancestral Protector
1% increased Totem Damage

Ancestral Warchief
1% increased Totem Damage

Anger
1% increased Area of Effect

Animate Guardian
Minions have 2% increased Movement Speed

Cleave
0.5% increased Attack Speed

Consecrated Path
0.5% increased Area of Effect

Decoy Totem
1% increased totem life

Determination
1% increased Area of Effect

Devouring Totem
1% increased totem life

Dominating Blow
Minions deal 0.5% increased Damage

Dread Banner
0.5% increased effect of Aura

Earthquake
1% increased Physical Damage

Enduring Cry
3% increased Area of Effect

Glacial Hammer
2% increased Chill Duration on enemies
1% increased Freeze Duration on enemies

Ground Slam
1.5% increased Stun Duration on enemies

Heavy Strike
1% increased Stun Duration on enemies

Herald of Ash
0.75% increased Fire Damage

Herald of Purity
1% increased Minion Movement Speed

Holy Flame Totem
1% increased Projectile Speed

Ice Crash
1% increased Cold Damage

Immortal Call
2% increased Cast Speed

Infernal Blow
0.5% increased Area of Effect

Leap Slam
0.5% chance to Knock Enemies Back on hit

Molten Shell
1% chance to Ignite enemies

Molten Strike
1% increased Fire Damage

Punishment
Cursed enemies grant 0.25% increased Attack Speed on Melee hit

Purity of Fire
1% increased Area of Effect

Rallying Cry
1.5% increased Skill Effect Duration

Reckoning
0.5% increased Area of Effect

Rejuvenation Totem
3% increased Aura Area of Effect

Searing Bond
1% increased totem life

Shield Charge
1% increased Damage

Shockwave Totem
1% increased totem life

Smite
0.5% increased Area of Effect

Static Strike
1% chance to Shock enemies

Summon Flame Golem
1% increased Minion Maximum Life
1% increased Minion Damage

Summon Stone Golem
1% increased Minion Maximum Life
1% increased Minion Damage

Sunder
0.5% increased Area of Effect

Sweep
0.5% increased Area of Effect

Tectonic Slam
0.5% increased Area of Effect

Vaal Ancestral Warchief
1% increased Totem Damage

Vaal Earthquake
1% increased Physical Damage

Vaal Glacial Hammer
2% increased Chill Duration on enemies
1% increased Freeze Duration on enemies

Vaal Ground Slam
1.5% increased Stun Duration on enemies

Vaal Impurity of Fire
1% increased Area of Effect

Vaal Molten Shell
1% chance to Ignite enemies

Vengeance
0.5% chance to Trigger this Skill when Hit

Vigilant Strike
1% increased Fortify duration

Vitality
1% increased Area of Effect

Vulnerability
Cursed Enemies have 0.5% chance to Bleed when Hit by Attacks

War Banner
0.5% increased effect of Aura

Warlord's Mark
Cursed enemies have a 0.5% chance to grant an Endurance Charge when slain
Support Skill Gems
Skill gem

Added Cold Damage Support
Supported Skills deal 0.5% increased Cold Damage

Additional Accuracy Support
Supported Skills have 1% increased Accuracy Rating

Advanced Traps Support
Supported Skills deal 0.5% increased Trap Damage

Blind Support
Supported Skills have 1% increased Blinding duration

Block Chance Reduction Support
Supported Skills have 0.25% reduced Enemy Block Chance

Cast On Critical Strike Support
Supported Skills have 1% increased Critical Strike Chance

Cast on Death Support
Supported Skills have 3% increased Area of Effect while Dead

Chain Support
Supported Skills have 1% increased Projectile Speed

Chance to Flee Support
Supported Skills have 1% chance to Cause Monsters to Flee

Charged Traps Support
Supported Skills deal 0.5% increased Trap Damage

Cluster Traps Support
Supported Skills deal 0.5% increased Trap Damage

Cold Penetration Support
Supported Skills deal 0.5% increased Cold Damage

Culling Strike Support
Supported Skills have 0.5% increased Attack Speed
Supported Skills have 0.5% increased Cast Speed

Deadly Ailments Support
Supported Skills deal 0.5% increased Damage over Time

Enhance Support
This Gem gains 5% increased Experience

Faster Attacks Support
Supported Skills have 0.5% increased Attack Speed

Faster Projectiles Support
Supported Skills have 0.5% increased Attack Speed
Supported Skills have 0.5% increased Cast Speed

Fork Support
Supported Skills deal 0.5% increased Projectile Damage

Greater Multiple Projectiles Support
Supported Skills have 0.5% increased Attack Speed
Supported Skills have 0.5% increased Cast Speed

Hypothermia Support
Supported Skills have 1.5% increased Chill Duration on Enemies

Ice Bite Support
Supported Skills deal 1% increased Damage with Hits against Frozen Enemies

Lesser Multiple Projectiles Support
Supported Skills have 0.5% increased Attack Speed
Supported Skills have 0.5% increased Cast Speed

Lesser Poison Support
Supported Skills deal 0.5% increased Damage with Poison

Mana Leech Support
Supported Skills deal 0.5% increased Damage while Leeching Mana

Mirage Archer Support
0.5% increased Attack Damage

Multiple Traps Support
Supported Skills have 1% increased Trap Trigger Area of Effect

Onslaught Support
0.25% increased Attack and Cast Speed

Pierce Support
Supported Skills deal 0.5% increased Projectile Damage

Point Blank Support
Supported Skills deal 0.5% increased Projectile Damage

Poison Support
Supported Skills deal 0.5% increased Damage with Poison

Slower Projectiles Support
Supported Skills deal 0.5% increased Projectile Damage

Swift Affliction Support
Supported Skills deal 0.5% increased Damage over Time

Trap and Mine Damage Support
Supported Skills deal 0.5% increased Damage

Trap Support
Supported Skills have 0.5% increased Trap Throwing Speed

Vicious Projectiles Support
Supported Skills deal 0.5% increased Physical Damage

Vile Toxins Support
Supported Skills deal 1% increased Damage with Poison

Void Manipulation Support
Supported Skills deal 0.5% increased Chaos Damage

Volley Support
Supported Skills deal 1% increased Projectile Damage

Withering Touch Support
Supported Skills deal 0.5% increased Chaos Damage

Added Chaos Damage Support
Supported Skills deal 0.5% increased Chaos Damage

Added Lightning Damage Support
Supported Skills deal 0.5% increased Lightning Damage

Arcane Surge Support
Supported Skills deal 0.5% increased Spell Damage

Blasphemy Support
0.5% increased Effect of Supported Curses

Bonechill Support
Supported Skills have 1% increased Chill Duration on Enemies

Cast when Stunned Support
Supported Skills deal 0.5% increased Damage

Cast while Channelling Support
Supported Skills deal 0.5% increased Damage

Combustion Support
Supported Skills deal 0.5% increased Fire Damage

Concentrated Effect Support
Supported Skills deal 0.5% increased Area Damage

Controlled Destruction Support
Supported Skills deal 0.5% increased Spell Damage

Curse On Hit Support
0.5% increased Effect of Supported Curses

Decay Support
Supported Skills deal 0.5% increased Chaos Damage

Efficacy Support
Supported Skills deal 0.5% increased Damage over Time

Elemental Focus Support
Supported Skills deal 0.5% increased Elemental Damage

Elemental Proliferation Support
0.5% increased Duration of Elemental Ailments on Enemies

Energy Leech Support
Supported Skills deal 0.5% increased Damage while Leeching Energy Shield

Enlighten Support
This Gem gains 5% increased Experience

Faster Casting Support
Supported Skills have 0.5% increased Cast Speed

Ignite Proliferation Support
Supported Skills deal 0.5% increased Fire Damage

Immolate Support
Supported Skills deal 0.5% increased Fire Damage

Increased Area of Effect Support
Supported Skills deal 0.5% increased Area Damage

Increased Critical Damage Support
Supported Skills have +0.75% to Critical Strike Multiplier

Increased Critical Strikes Support
Supported Skills have 1% increased Critical Strike Chance

Infused Channelling Support
Gain Infusion after Channelling a Supported Skill for -0.02 seconds

Innervate Support
Supported Skills have 1.5% increased Shock Duration on Enemies

Intensify Support
Supported Skills deal 0.5% increased Area Damage

Item Rarity Support
0.5% increased Rarity of Items Dropped by Enemies Slain from Supported Skills

Lightning Penetration Support
Supported Skills deal 0.5% increased Lightning Damage

Minefield Support
Supported Skills have 1% increased Mine Detonation Area of Effect

Minion and Totem Elemental Resistance Support
Totems and Minions summoned by Supported Skills have +0.5% Fire Resistance
Totems and Minions summoned by Supported Skills have +0.5% Cold Resistance
Totems and Minions summoned by Supported Skills have +0.5% Lightning Resistance

Minion Damage Support
Supported Skills deal 0.75% increased Minion Damage

Minion Life Support
Supported Skills have 0.75% increased Minion maximum Life

Minion Speed Support
Supported Skills have 0.5% increased Minion Movement Speed

Physical to Lightning Support
Supported Skills deal 0.5% increased Physical Damage
Supported Skills deal 0.5% increased Lightning Damage

Power Charge On Critical Support
Supported Skills have 1% increased Critical Strike Chance

Remote Mine Support
Supported Skills have 0.5% increased Mine Laying Speed

Spell Cascade Support
Supported Skills have 0.5% increased Area of Effect

Spell Echo Support
Supported Skills deal 0.5% increased Spell Damage

Summon Phantasm on Kill Support
0.5% chance to Summon a Phantasm when Supported Skills, or Non-Phantasm Minions
from Supported Skills, deal a Killing Blow

Unbound Ailments Support
Supported Skills have 0.5% increased Duration of Ailments on Enemies

Unleash Support
Supported Skills deal 0.5% increased Spell Damage

Added Fire Damage Support
Supported Skills deal 0.5% increased Fire Damage

Ancestral Call Support
Supported Skills have 0.5% increased Attack Speed

Blood Magic Support
Supported Skills have 0.5% reduced Mana Cost

Bloodlust Support
Supported Skills deal 0.5% increased Melee Damage against Bleeding Enemies

Brutality Support
Supported Skills deal 0.5% increased Physical Damage

Burning Damage Support
Supported Skills deal 0.5% increased Burning Damage

Cast on Melee Kill Support
Supported Skills deal 0.5% increased Damage

Cast when Damage Taken Support
Supported Skills deal 0.5% increased Damage

Chance to Bleed Support
Supported Attacks deal 0.5% increased Damage with Bleeding

Cold to Fire Support
Supported Skills deal 0.5% increased Cold Damage
Supported Skills deal 0.5% increased Fire Damage

Damage on Full Life Support
Supported Skills deal 0.5% increased Damage

Elemental Damage with Attacks Support
0.5% increased Elemental Damage with Attack Skills

Empower Support
This Gem gains 5% increased Experience

Endurance Charge on Melee Stun Support
Supported Skills have 1% increased Stun Duration on Enemies

Fire Penetration Support
Supported Skills deal 0.5% increased Fire Damage

Fortify Support
Supported Skills have 0.5% increased Fortify duration

Generosity Support
Supported Skills have 2% increased Aura Area of Effect

Increased Duration Support
Supported Skills have 0.5% increased Skill Effect Duration

Iron Grip Support
Supported Skills deal 0.5% increased Projectile Damage

Iron Will Support
Supported Skills deal 0.5% increased Spell Damage

Knockback Support
Supported Skills have 0.5% chance to Knock Enemies Back on hit

Less Duration Support
Supported Skills have 0.5% reduced Skill Effect Duration

Life Gain on Hit Support
+0.5 Life gained for each Enemy hit by Attacks from Supported Skills

Life Leech Support
Supported Skills deal 0.5% increased Damage while Leeching Life

Maim Support
Supported Skills deal 0.5% increased Physical Damage

Melee Physical Damage Support
Supported Skills deal 0.5% increased Melee Physical Damage

Melee Splash Support
Supported Skills have 0.5% increased Area of Effect

Multiple Totems Support
1% increased Totem Placement speed

Multistrike Support
Supported Skills deal 0.5% increased Melee Physical Damage

Ranged Attack Totem Support
1% increased Totem Placement speed

Reduced Mana Support
Supported Skills have 0.25% reduced Mana Cost

Ruthless Support
0.5% increased Attack Damage

Spell Totem Support
1% increased Totem Placement speed

Stun Support
Supported Skills have 1.5% increased Stun Duration on Enemies