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Gems (Japanese: ジェム, Jemu) are a type of equipment in Xenoblade Chronicles . They provide a mechanical bonus of some sort, such as increasing Strength by 20, or resisting 50% of Spike Damage. Gems are activated by equipping them on Weapons or Armour which have gem slots. Many weapons and armour are available both with and without gem slots. Alternatively, some weapons and armour, called Unique items, have gems permanently attached to them.

Each piece of armour can hold up to one gem, and a weapon can hold up to three gems. Thus a character can equip up to eight gems. Some gems can only be equipped on one type of equipment - either weapons or armour, while others can be equipped on both weapons and armour.

Acquiring Gems

Gems can be acquired in a number of ways. Gems are often given as a reward for completing a Quest or a section of the Collectopaedia. Many NPCs have gems available for Trading.

Gem Crafting

Main article: Gem Crafting

Gems can be crafted by combining Ether Crystals and/or Ether Cylinders in an Ether Furnace. Ether crystals are dropped by enemies, or collected through Mining. Mechon and other mechanical enemies drop ether cylinders instead of ether crystals.

When crafting a gem, two characters work together. One character serves as the Shooter and the other serves as the Engineer. Each character has different strengths and weaknesses in each role. If there is high party affinity, characters who are not crafting may also help, which can result in higher quality gems.

Each gem's page lists where to find gems and crystals. Additionally, mining locations are listed on each area's page and a complete list of all mining locations in Xenoblade Chronicles can be found on this page.

Value

A gems's selling price depends on its rank and effects. The gem's effect tends to factor more prominently in its value than its rank. For instance, a Rank III Heat Sink gem is 4× as valuable than a Rank VI Agility Up gem, while a Rank VI Heat Sink gem is only 1.7× as valuable than a Rank III Heat Sink gem.

Farming gems to sell for gold is not a viable means of collecting gold quickly because of how this works. The more common types of gems that can be found early on in the game, as well as lower rank gems, will sell for negligible amounts of gold. The most valuable gem in the game which is not dropped by a superboss, Debuff Resist VI, sells for 6,875 G (8,250 G with Riki's Buy Stuff! skill), which is far more than most other rank VI gems but a lot less than many other late game materials and unique equipment. In general, selling excess equipment and materials throughout the game will net much more gold than selling gems.

The individual gem pages list the base value (sell price) of a Rank I gem. The values for higher ranks of gems are calculated as follows:

Rank Value
Rank I
base value
Rank II
1.2 × base value
Rank III
1.5 × base value
Rank IV
1.8 × base value
Rank V
2.0 × base value
Rank VI
2.5 × base value

Type

Gems are divided into types based on their mechanical effects. More details, including descriptions, stat breakdowns, and locations for all variations of a gem can be found on each gem's page.

Attribute

Gems in this category increase a character's basic game statistics.

Name Type Element Max. Effect
Strength Up Equipment
Fire
150 Increases Strength.
Agility Up Equipment
Wind
50 Increases Agility.
Ether Up Equipment
Electric
150 Increases Ether.
Muscle Up Equipment
Earth
100 Increases Physical Defence.
Ether Def Up Equipment
Ice
100 Increases Ether Defence.
HP Up Equipment
Water
50% Increases max HP.
Critical Up Weapon
Earth
25% Increases Critical Hit Rate.
Attack Stability Weapon
Earth
50% Increases Weapon Minimum Attack Damage.
Attack Plus Weapon
Earth
50% Increases Weapon Maximum Attack Damage.

Attack

Gems in this category modify attacks in some way. This category also includes Gems that debuff enemies.

Name Type Element Max. Effect
Electric Plus Weapon
Electric
100% Increases electric damage.
Double Attack Weapon
Electric
50% Grants a chance to attack twice when auto-attacking.
Spike Armour
Fire
250 Deals spike damage to enemies when attacked.
Bleed Attack Weapon
Wind
250 Adds Bleed effect to attacks.
Blaze Attack Weapon
Fire
400 Increases chance of auto-attack dealing extra Blaze damage.
Chill Attack Weapon
Ice
300 Increases chance of auto-attacks dealing extra Chill damage.
Poison Attack Weapon
Earth
500 Increases chance of auto-attacks dealing extra Poison damage.
Lightning Attack Weapon
Electric
500 Deals electric damage when auto-attacking.
Daze Up Weapon
Electric
100% Increases damage to Dazed enemies.
Topple Up Weapon
Wind
100% Increases damage on Toppled enemies.
Bleed Plus Weapon
Wind
100% Increases Bleed damage.
Blaze Plus Weapon
Fire
100% Increases Blaze damage.
Chill Plus Weapon
Ice
100% Increases Chill damage.
Poison Plus Weapon
Earth
100% Increases Poison damage.
Strength Down Weapon
Fire
25% Grants a chance to lower enemy's Strength.
Agility Down Weapon
Wind
25% Raises chance of an auto-attack reducing enemy's Agility.
Ether Down Weapon
Earth
25% Raises chance of an auto-attack reducing enemy's Ether.
Slow Weapon
Ice
25% Raises chance of an auto-attack inflict Slow.
Bind Weapon
Ice
25% Raises chance of an auto-attack inflicting Bind.
HP Steal Weapon
Water
200 Raises the chance of an auto-attack recovering HP.
Paralysis Weapon
Electric
25% Raises chance of an auto-attack inflict Paralysis.
Break Weapon
Wind
25% Raises chance of an auto-attack inflict Break.
Phys Def Down Weapon
Electric
25% Raises chance of an auto-attack reducing enemy's Physical Defence.
Ether Def Down Weapon
Ice
25% Grants a chance of successful attacks reducing enemy's Ether Defence.
First Attack Plus Weapon
Electric
150% Increases damage on the first attack of combat.
Back Atk Plus Weapon
Electric
100% Increases damage from attacks behind enemies.

Defence

Gems in this category modify a character's defences.

Name Type Element Max. Effect
Slow Resist Armour
Fire
100% Increases Slow resistance.
Bind Resist Armour
Fire
100% Increases Bind resistance.
Paralysis Resist Armour
Water
100% Increases Paralysis resistance.
Sleep Resist Armour
Fire
100% Increases Sleep resistance.
Confuse Resist Armour
Ice
100% Increases Confuse resistance.
Arts Seal Resist Armour
Wind
100% Increases Arts Seal resistance.
Daze Resist Armour
Electric
100% Increases Daze resistance.
Topple Resist Armour
Wind
100% Increases Topple resistance.
Lock-On Resist Armour
Ice
100% Increases Lock-On resistance.
Pierce Resist Armour
Electric
100% Increases Pierce resistance.
Divine Protect Armour
Earth
100% Increases Instant Death resistance.
Debuff Resist Armour
Water
100% Resistance against all status ailments, except Topple and Daze.
Good Footing Armour
Wind
100% Increases Blow-Down resistance.
Bleed Defence Armour
Earth
100% Reduces Bleed damage taken.
Blaze Defence Armour
Ice
100% Reduces Blaze damage taken.
Chill Defence Armour
Fire
100% Decreases Chill damage taken.
Poison Defence Armour
Water
100% Reduces Poison damage taken.
Spike Defence Armour
Water
100% Reduces Spike damage taken.
Physical Protect Armour
Earth
50% Activated at the start of a battle.

Reduces physical damage.

Ether Protect Armour
Ice
50% Activated at the start of a battle.

Reduces ether damage.

Auto-Atk Stealth Weapon
Ice
50% Reduces accumulated aggro from auto-attacks.
Arts Stealth Weapon
Ice
50% Reduces accumulated Aggro from using Arts.

Support

Gems in this category aid the character in ways not related to movement or dealing damage.

Name Type Element Max. Effect
Haste Weapon
Wind
50% Increases frequency of auto-attack.
Damage Heal Armour
Water
200 Chance to recover HP when attacked.
Recovery Up Armour
Water
50% HP Recovery amount increased.
Aura Heal Armour
Water
150 Restores HP every 2 seconds while an Aura is active.
Arts Heal Weapon
Water
150 Using Arts recovers HP.
Unbeatable Armour
Water
50% Raises the chance of surviving with 1 HP when Incapacitated.
Daze Plus Weapon
Electric
100% Increases duration of Daze.
Topple Plus Weapon
Wind
100% Extends Topple time.
Buff Time Plus Armour
Fire
150% Extends Buff time.
Debuff Plus Weapon
Earth
150% Extends gem Debuff time.
Weapon Power Weapon
Fire
50% Boosts activation rate for gems mounted on weapons.
Night Vision Weapon
Earth
50% Increases attack accuracy at night.
Initial Tension Equipment
Fire
100 Increases starting battle tension.
Aggro Up Weapon
Fire
50% Increases Aggro in battle.
Aggro Down Weapon
Earth
50% Decreases Aggro in battle.
Tension Swing Armour
Electric
50% Makes Tension change more easily.
Daze Tension Weapon
Electric
25 Tension is raised by attacking a Dazed enemy.
Revival HP Up Equipment
Fire
30% Increases amount of HP recovered when revived.
Talent Boost Weapon
Ice
12 Increases Talent Gauge gain from auto-attacks, but halves damage.
Heat Sink Weapon
Ice
75% Reduces Ether Rifle overheating.

Field

Gems in this category mostly provide benefits that are useful outside of combat, or assist in avoiding detection by enemies.

Name Type Element Max. Effect
Quick Step Armour
Wind
25% Increases Movement Speed.
Earth Cloak Equipment
Earth
60% Decreases detection range of land-based enemies.
Aquatic Cloak Equipment
Water
60% Decreases detection range of water-based enemies.
Aerial Cloak Equipment
Wind
60% Decreases detection range of flying enemies.
Auto-Heal Up Armour
Water
25% Increases HP recovery speed outside of combat.
Fall Defence Armour
Wind
75% Reduces falling damage.
Terrain Defence Armour
Water
75% Decreases damage from hazardous terrain, such as poisonous bogs.

Special

Gems in this category increase a character's rate of advancement.

Name Type Element Max. Effect
EXP Up Equipment
Fire
200% Increases EXP gained.
AP Up Equipment
Water
200% Increases Art Points gained.

Footnotes

Max.: The maximum combined total when two or more of the same gem are equipped. For example, two Agility Up V 30 gems will raise a character's Agility by only 50 points.

Future Connected

Since Gem Crafting has been removed in Future Connected, gems are obtained directly from mining ether deposits, in addition to completing certain Bionis' Shoulder Quests and opening Giant's Troves. Gems of rank II and III can be mined after obtaining the Ether Pick from Carranelle in Companions' Cape, and gems of rank IV can be mined after obtaining the Reinforced Ether Pick from Lott in Gran Dell.

Gems unobtainable in Future Connected through mining:

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