Game Compendium

Gem Affixes

Every skill-gem affix, class gate, tag or school requirement, and scaling range.

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Gem-affix rules

Normal gems carry no affixes. Magic gems can hold one prefix and one suffix. Rare gems can hold two prefixes and two suffixes. A gem keeps its base skill name; rarity color and its modifier list communicate the roll.

Gem affixes roll on the same ten-tier geometric ladder as gear affixes: tier t unlocks at item level 1–150, and the bands are strictly disjoint, so any T(n) roll beats every T(n−1) roll. Only the newest three unlocked tiers carry natural roll weight; older tiers age out of the pool. Gems drop at item level = map tier × 10, so T10 unlocks on tier-15 maps. Flat effects such as +1 level or +1 projectile remain tier 1.

Complete gem-affix list

Affix	Class	Stat	T1 range	T10 range	Requirements	Flags
Empowered prefix	common	Skill Damage Increase	8%–9%	49%–58%	Any skill gem	· Needs hit
Brutal prefix	common	Physical Skill Damage Increase	10%–11%	61%–73%	physical	· Needs hit
Burning prefix	common	Fire Skill Damage Increase	10%–11%	61%–73%	fire	· Needs hit
Glacial prefix	common	Cold Skill Damage Increase	10%–11%	61%–73%	cold	· Needs hit
Voltaic prefix	common	Lightning Skill Damage Increase	10%–11%	61%–73%	lightning	· Needs hit
Abyssal prefix	common	Chaos Skill Damage Increase	10%–11%	61%–73%	chaos	· Needs hit
Precise prefix	common	Skill Crit Chance	3%	20%–24%	Any skill gem	· Needs hit
Ruinous prefix	common	Skill Crit Damage	12%–13%	51%–58%	Any skill gem	· Needs hit
Ferocious prefix	common	Attack Skill Damage Increase	10%–11%	61%–73%	attack	· Needs hit
Mystic prefix	common	Spell Skill Damage Increase	10%–11%	61%–73%	spell	· Needs hit
Savage prefix	common	Melee Skill Damage Increase	10%–11%	61%–73%	melee	· Needs hit
Piercing prefix	common	Projectile Skill Damage Increase	10%–11%	61%–73%	projectile	· Needs hit
Excruciating prefix	signature	Ailment Damage Increase	10%–11%	65%–78%	bleed ignite poison	iLvl 41+ · Needs hit
Ironclad prefix	signature	Gem Level Bonus	1	—	physical	iLvl 41+ · Flat
Emberwrought prefix	signature	Gem Level Bonus	1	—	fire	iLvl 41+ · Flat
Rimewrought prefix	signature	Gem Level Bonus	1	—	cold	iLvl 41+ · Flat
Stormwrought prefix	signature	Gem Level Bonus	1	—	lightning	iLvl 41+ · Flat
Blightwrought prefix	signature	Gem Level Bonus	1	—	chaos	iLvl 41+ · Flat
Ascendant prefix	mythic	Gem Level Bonus	1	—	Any skill gem	iLvl 91+ · Rare only · Flat
Splitting prefix	mythic	Extra Projectiles	1	—	projectile	iLvl 91+ · Rare only · Flat
Chaining prefix	mythic	Chain Count	1	—	projectile	iLvl 91+ · Rare only · Flat
Swift suffix	common	Cooldown Reduction	4%	25%–29%	Any skill gem	· Excludes aura
Widening suffix	common	Area Radius	8%–9%	42%–49%	area	· Excludes shout, aura
Studious suffix	common	Gem Xp Gain	8%–9%	42%–49%	Any skill gem
Lucid suffix	common	Mana Cost Reduction	6%	33%–39%	spell	· Excludes aura
Serrated suffix	common	Bleed Chance	5%	32%–39%	bleed	· Needs hit
Searing suffix	common	Ignite Chance	5%	32%–39%	ignite	· Needs hit
Venomous suffix	common	Poison Chance	5%	32%–39%	poison	· Needs hit
Enduring suffix	signature	Skill Duration Increase	8%–9%	42%–49%	bleed ignite poison stun	iLvl 41+ · Excludes aura
Echoing suffix	mythic	Repeat Chance	4%	25%–29%	Any skill gem	iLvl 91+ · Rare only · Excludes shout, aura
Expansive prefix	common	Area Skill Damage Increase	8%–9%	42%–49%	area	· Needs hit
Pointed prefix	common	Strike Skill Damage Increase	8%–9%	42%–49%	strike	· Needs hit
Sustained prefix	common	Channel Skill Damage Increase	8%–9%	42%–49%	channel	· Needs hit
Lancing prefix	common	Beam Skill Damage Increase	10%–11%	46%–53%	beam	· Needs hit
Farstrung prefix	common	Bow Skill Damage Increase	10%–11%	46%–53%	bow	· Needs hit
Shieldbound prefix	common	Shield Skill Damage Increase	10%–11%	46%–53%	shield	· Needs hit
Resonant prefix	common	Shout Effect Increase	5%	25%–29%	shout
Consecrated prefix	common	Aura Effect Increase	3%–3.5%	17%–19%	aura
Guarding prefix	common	Defensive Effect Increase	5%	25%–29%	defensive control
Prismward prefix	common	Elemental Resistance Bonus	2%–2.3%	10%–12%	Any skill gem	· Needs grantsElementalRes
Kingslayer prefix	common	Boss Skill Damage Increase	8%–9%	38%–44%	Any skill gem	· Needs hit
Merciless prefix	common	Low Life Skill Damage Increase	10%–11%	50%–58%	Any skill gem	· Needs hit
Closebound prefix	common	Nearby Skill Damage Increase	8%–9%	38%–44%	melee area beam	· Needs hit
Farbound prefix	common	Distant Skill Damage Increase	8%–9%	38%–44%	projectile beam	· Needs hit
Crushing prefix	common	Physical Armor Overwhelm	4%	23%–27%	physical	· Needs hit
Cindersharp prefix	common	Fire Penetration	2%–2.3%	12%–15%	fire	· Needs hit
Frostbiting prefix	common	Cold Penetration	2%–2.3%	12%–15%	cold	· Needs hit
Stormcut prefix	common	Lightning Penetration	2%–2.3%	12%–15%	lightning	· Needs hit
Voidcut prefix	common	Chaos Penetration	2%–2.3%	12%–15%	chaos	· Needs hit
Hematic prefix	common	Bleed Damage Increase	10%–11%	58%–68%	bleed	· Needs hit
Smoldering prefix	common	Ignite Damage Increase	10%–11%	58%–68%	ignite	· Needs hit
Noxious prefix	common	Poison Damage Increase	10%–11%	58%–68%	poison	· Needs hit
Bloodhunting prefix	common	Damage Vs Bleeding	8%–9%	38%–44%	Any skill gem	· Needs hit
Ashhunting prefix	common	Damage Vs Ignited	8%–9%	38%–44%	Any skill gem	· Needs hit
Blighthunting prefix	common	Damage Vs Poisoned	8%–9%	38%–44%	Any skill gem	· Needs hit
Rimehunting prefix	common	Damage Vs Chilled	8%–9%	38%–44%	Any skill gem	· Needs hit
Stormhunting prefix	common	Damage Vs Shocked	8%–9%	38%–44%	Any skill gem	· Needs hit
Concussive prefix	common	Damage Vs Stunned	8%–9%	38%–44%	Any skill gem	· Needs hit
of Tempo suffix	common	Attack Speed Increase	3%–3.6%	18%–21%	attack	· Excludes aura
of Incantation suffix	common	Cast Speed Increase	3%–3.6%	18%–21%	spell	· Excludes aura
of Cadence suffix	common	Channel Tick Rate Increase	3%–3.6%	18%–21%	channel	· Needs hit
of Reach suffix	common	Projectile Range Increase	5%	29%–34%	projectile
of Flight suffix	common	Projectile Speed Increase	5%	36%–44%	projectile
of Refraction suffix	common	Beam Width Increase	5%	29%–34%	beam
of the War Bell suffix	common	Shout Radius Increase	5%	29%–34%	shout
of the Halo suffix	common	Aura Radius Increase	5%	29%–34%	aura
of Impact suffix	common	Stun Duration Increase	8%–9%	45%–53%	stun	· Needs hit
of Open Wounds suffix	common	Bleed Duration Increase	8%–9%	45%–53%	bleed	· Needs hit
of Coals suffix	common	Ignite Duration Increase	8%–9%	45%–53%	ignite	· Needs hit
of Lingering Venom suffix	common	Poison Duration Increase	8%–9%	45%–53%	poison	· Needs hit
of Rime suffix	common	Chill Chance	4%	25%–29%	cold chill	· Needs hit
of Sparks suffix	common	Shock Chance	4%	25%–29%	lightning shock	· Needs hit
of Winter suffix	common	Chill Duration Increase	8%–9%	45%–53%	cold chill	· Needs hit
of Thunder suffix	common	Shock Duration Increase	8%–9%	45%–53%	lightning shock	· Needs hit
of Numbing suffix	common	Chill Effect Increase	5%	29%–34%	cold chill	· Needs hit
of Overcharge suffix	common	Shock Effect Increase	5%	29%–34%	lightning shock	· Needs hit
of Surety suffix	common	Accuracy Increase	8%–9%	56%–68%	attack	· Needs hit
of Economy suffix	common	Mana Cost Reduction	4%	23%–27%	attack	· Excludes aura
of Measured Breath suffix	common	Mana Cost Reduction	4%	23%–27%	channel
of Stewardship suffix	common	Aura Reservation Efficiency	2%–2.4%	13%–16%	aura
of Rallying suffix	common	Cooldown Recovery Increase	4%	23%–27%	shout
of Mending suffix	common	Life On Hit	1–1.3	11–14	Any skill gem	· Needs hit
of Siphoning suffix	common	Mana On Hit	1–1.2	6.5–7.8	Any skill gem	· Needs hit
of Hunger suffix	common	Life Leech	0.3%	3.1%–3.9%	Any skill gem	· Needs hit
of Thirst suffix	common	Mana Leech	0.3%	3.1%–3.9%	Any skill gem	· Needs hit
of Affliction suffix	common	Tagged Ailment Chance	3%–3.5%	17%–19%	bleed ignite poison chill shock	· Needs hit
Weaponmaster's prefix	signature	Gem Level Bonus	1	—	attack	iLvl 41+ · Flat
Arcanist's prefix	signature	Gem Level Bonus	1	—	spell	iLvl 41+ · Flat
Closekeeper's prefix	signature	Gem Level Bonus	1	—	melee	iLvl 41+ · Flat
Farcaster's prefix	signature	Gem Level Bonus	1	—	projectile	iLvl 41+ · Flat
Worldshaper's prefix	signature	Gem Level Bonus	1	—	area	iLvl 41+ · Flat
Duelist's prefix	signature	Gem Level Bonus	1	—	strike	iLvl 41+ · Flat
Conduit's prefix	signature	Gem Level Bonus	1	—	channel	iLvl 41+ · Flat
Raywright's prefix	signature	Gem Level Bonus	1	—	beam	iLvl 41+ · Flat
Fletcher's prefix	signature	Gem Level Bonus	1	—	bow	iLvl 41+ · Flat
Oathkeeper's prefix	signature	Gem Level Bonus	1	—	shield	iLvl 41+ · Flat
Warmaster's prefix	signature	Gem Level Bonus	1	—	shout	iLvl 41+ · Flat
Hierophant's prefix	signature	Gem Level Bonus	1	—	aura	iLvl 41+ · Flat
Bloodletter's prefix	signature	Bleed Chance	4%	20%–23%	bleed	iLvl 41+ · Needs hit
Pyrekeeper's prefix	signature	Ignite Chance	4%	20%–23%	ignite	iLvl 41+ · Needs hit
Plaguehand's prefix	signature	Poison Chance	4%	20%–23%	poison	iLvl 41+ · Needs hit
Wintertouched prefix	signature	Chill Chance	4%	20%–23%	cold chill	iLvl 41+ · Needs hit
Stormtouched prefix	signature	Shock Chance	4%	20%–23%	lightning shock	iLvl 41+ · Needs hit
Furnaceborn prefix	signature	Fire Skill Damage Increase	10%–11%	43%–48%	fire	iLvl 41+ · Needs hit
Glacierborn prefix	signature	Cold Skill Damage Increase	10%–11%	43%–48%	cold	iLvl 41+ · Needs hit
Tempestborn prefix	signature	Lightning Skill Damage Increase	10%–11%	43%–48%	lightning	iLvl 41+ · Needs hit
Abyssborn prefix	signature	Chaos Skill Damage Increase	10%–11%	43%–48%	chaos	iLvl 41+ · Needs hit
of the Red Wake suffix	signature	Bleed Chance	4%	20%–23%	bleed	iLvl 41+ · Needs hit
of the Last Ember suffix	signature	Ignite Chance	4%	20%–23%	ignite	iLvl 41+ · Needs hit
of the Long Venom suffix	signature	Poison Chance	4%	20%–23%	poison	iLvl 41+ · Needs hit
of Deep Winter suffix	signature	Chill Duration Increase	10%–11%	43%–48%	cold chill	iLvl 41+ · Needs hit
of the Storm Cage suffix	signature	Shock Duration Increase	10%–11%	43%–48%	lightning shock	iLvl 41+ · Needs hit
of Arterial Sight suffix	signature	Crit Vs Bleeding	3%–3.5%	17%–19%	Any skill gem	iLvl 41+ · Needs hit
of Cinder Sight suffix	signature	Crit Vs Ignited	3%–3.5%	17%–19%	Any skill gem	iLvl 41+ · Needs hit
of Venom Sight suffix	signature	Crit Vs Poisoned	3%–3.5%	17%–19%	Any skill gem	iLvl 41+ · Needs hit
of Rime Sight suffix	signature	Crit Vs Chilled	3%–3.5%	17%–19%	Any skill gem	iLvl 41+ · Needs hit
of Storm Sight suffix	signature	Crit Vs Shocked	3%–3.5%	17%–19%	Any skill gem	iLvl 41+ · Needs hit
of Perfect Cadence suffix	signature	Channel Tick Rate Increase	4%	20%–23%	channel	iLvl 41+
of the Unbroken Cry suffix	signature	Skill Duration Increase	6%	33%–39%	shout	iLvl 41+
of the Living Halo suffix	signature	Aura Effect Increase	3%–3.5%	15%–17%	aura	iLvl 41+
of the Bounding Bolt suffix	signature	Propagation Damage Increase	10%–11%	54%–63%	projectile	iLvl 41+ · Needs fork or chain
of the Blood Chalice suffix	signature	Life Leech	0.5%	3.2%–3.9%	Any skill gem	iLvl 41+ · Needs hit
of the Deep Font suffix	signature	Mana Leech	0.4%	3.9%–4.8%	Any skill gem	iLvl 41+ · Needs hit
of Red Recompense suffix	signature	Ailment Life Leech	0.3%	3.1%–3.9%	bleed ignite poison	iLvl 41+ · Needs hit
of Reprisal suffix	signature	Cooldown Refund On Kill	10%–11%	65%–78%	Any skill gem	iLvl 41+ · Needs hit
of Replenishment suffix	signature	Mana On Kill	1–1.3	13–17	Any skill gem	iLvl 41+ · Needs hit
of Renewal suffix	signature	Life On Kill	2–2.6	26–34	Any skill gem	iLvl 41+ · Needs hit
of Reformation suffix	signature	Energy Shield On Kill	2–2.6	26–34	Any skill gem	iLvl 41+ · Needs hit
Bifurcating prefix	mythic	Mythic Fork Once	1	—	projectile	iLvl 91+ · Rare only · Flat · Needs hit
Transfixing prefix	mythic	Mythic Pierce	1	—	projectile	iLvl 91+ · Rare only · Flat · Needs hit
Rebounding prefix	mythic	Mythic Return	1	—	projectile	iLvl 91+ · Rare only · Flat · Needs hit
Fusillading prefix	mythic	Mythic Barrage	1	—	projectile	iLvl 91+ · Rare only · Flat · Needs hit
Sundering prefix	mythic	Mythic Strike Splash	1	—	strike	iLvl 91+ · Rare only · Flat · Needs hit
Reverberating prefix	mythic	Mythic Aftershock	1	—	area	iLvl 91+ · Rare only · Flat · Needs hit
Crescendoing prefix	mythic	Mythic Crescendo	1	—	channel	iLvl 91+ · Rare only · Flat · Needs hit
Overbrimming prefix	mythic	Mythic Final Burst	1	—	channel	iLvl 91+ · Rare only · Flat · Needs hit
Prism-Splitting prefix	mythic	Mythic Beam Branch	1	—	beam	iLvl 91+ · Rare only · Flat · Needs hit
Bloodburst prefix	mythic	Mythic Bleed Burst	1	—	bleed	iLvl 91+ · Rare only · Flat · Needs hit
Wildfire prefix	mythic	Mythic Ignite Spread	1	—	ignite	iLvl 91+ · Rare only · Flat · Needs hit
Plaguebloom prefix	mythic	Mythic Poison Spread	1	—	poison	iLvl 91+ · Rare only · Flat · Needs hit
Hoarfrost prefix	mythic	Mythic Chill Shatter	1	—	cold chill	iLvl 91+ · Rare only · Flat · Needs hit
Stormweb prefix	mythic	Mythic Shock Proliferation	1	—	lightning shock	iLvl 91+ · Rare only · Flat · Needs hit
Pestilent prefix	mythic	Mythic Double Ailment	1	—	bleed ignite poison	iLvl 91+ · Rare only · Flat · Needs hit
Convergent prefix	mythic	Mythic Prismatic Conversion	1	—	physical	iLvl 91+ · Rare only · Flat · Needs hit
of the Twin Blow suffix	mythic	Mythic Double Damage	1	—	Any skill gem	iLvl 91+ · Rare only · Flat · Needs hit
of Annihilation suffix	mythic	Mythic Triple Damage	1	—	Any skill gem	iLvl 91+ · Rare only · Flat · Needs hit
of Providence suffix	mythic	Mythic Lucky	1	—	Any skill gem	iLvl 91+ · Rare only · Flat · Needs hit
of the Faultline suffix	mythic	Mythic Crit Bypass	1	—	Any skill gem	iLvl 91+ · Rare only · Flat · Needs hit
of the Headsman's Clock suffix	mythic	Mythic Reset On Kill	1	—	Any skill gem	iLvl 91+ · Rare only · Flat · Needs hit
of Recursion suffix	mythic	Mythic Reset On Crit	1	—	Any skill gem	iLvl 91+ · Rare only · Flat · Needs hit
of Compression suffix	mythic	Mythic Ailment Compression	1	—	bleed ignite poison	iLvl 91+ · Rare only · Flat · Needs hit
of Escalation suffix	mythic	Mythic Stack Ramp	1	—	bleed ignite poison	iLvl 91+ · Rare only · Flat · Needs hit
of the Crimson Edge suffix	mythic	Mythic Crit Bleeds	1	—	bleed	iLvl 91+ · Rare only · Flat · Needs hit
of White Flame suffix	mythic	Mythic Crit Ignites	1	—	ignite	iLvl 91+ · Rare only · Flat · Needs hit
of Black Venom suffix	mythic	Mythic Crit Poisons	1	—	poison	iLvl 91+ · Rare only · Flat · Needs hit
of Supercharge suffix	mythic	Mythic Shock Cap	1	—	lightning shock	iLvl 91+ · Rare only · Flat · Needs hit
of Absolute Zero suffix	mythic	Mythic Chill Freeze	1	—	cold chill	iLvl 91+ · Rare only · Flat · Needs hit
of the Open Covenant suffix	mythic	Mythic Aura Unreserved	1	—	aura	iLvl 91+ · Rare only · Flat
of the World Bell suffix	mythic	Mythic Shout Global	1	—	shout	iLvl 91+ · Rare only · Flat
of the Pillar suffix	mythic	Mythic Steadfast Channel	1	—	channel	iLvl 91+ · Rare only · Flat