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Gem

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Gems (Japanese: ジェム, Jemu) are a type of equipment in Xenoblade Chronicles that 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 four times more valuable than a Rank VI Agility Up gem, while a Rank VI Heat Sink gem is only 1.5x more 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
Gem Rank 1
base value
Gem Rank 2
1.2 x base value
Gem Rank 3
1.5 x base value
Gem Rank 4
1.8 x base value
Gem Rank 5
2.0 x base value
Gem Rank 6
2.5 x 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
Gem-fire
150 Increases Physical Strength.
Agility Up Equipment
Gem-wind
50 Increases Agility.
Ether Up Equipment
Gem-electric
150 Increases Ether Attack.
Muscle Up Equipment
Gem-earth
100 Increases Physical Defence.
Ether Def Up Equipment
Gem-ice
100 Increases Ether Defence.
HP Up Equipment
Gem-water
50% Increases Health.
Critical Up Weapon
Gem-earth
25% Increases Critical Hit Rate.
Attack Stability Weapon
Gem-earth
50% Increases Weapon Minimum Attack Damage.
Attack Plus Weapon
Gem-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
Gem-electric
100% Increases electric damage.
Double Attack Weapon
Gem-electric
50% Grants a chance to attack twice when auto attacking.
Spike Armour
Gem-fire
250 Deals damage to enemies when attacked.
Bleed Attack Weapon
Gem-wind
250 Adds bleed effect to attacks.
Blaze Attack Weapon
Gem-fire
400 Increases chance of auto-attack dealing extra Blaze damage.
Chill Attack Weapon
Gem-ice
300 Increases chance of auto-attack dealing extra Chill damage.
Poison Attack Weapon
Gem-earth
500 Increases chance of auto-attack dealing extra Poison damage.
Lightning Attack Weapon
Gem-electric
500 Deals electric damage when auto attacking.
Daze Up Weapon
Gem-electric
100% Increases damage to dazed enemies.
Topple Up Weapon
Gem-wind
100% Increases damage on toppled enemies.
Bleed Plus Weapon
Gem-wind
100% Increases bleed damage.
Blaze Plus Weapon
Gem-fire
100% Increases Blaze damage.
Chill Plus Weapon
Gem-ice
100% Increases Chill-based damage.
Poison Plus Weapon
Gem-earth
100% Increases Poison damage.
Strength Down Weapon
Gem-fire
25% Grants a chance to lower enemy's strength.
Agility Down Weapon
Gem-wind
25% Raises chance of an auto-attack reduce enemy's agility.
Ether Down Weapon
Gem-earth
25% Raises chance of an auto-attack reduce enemy's ether.
Slow Weapon
Gem-ice
25% Raises chance of an auto-attack inflict Slow.
Bind Weapon
Gem-ice
25% Raises chance of an auto-attack inflict Bind.
HP Steal Weapon
Gem-water
200 Raises the chance of an auto-attack recover HP.
Paralysis Weapon
Gem-electric
25% Raises chance of an auto-attack inflict Paralysis.
Break Weapon
Gem-wind
25% Raises chance of an auto-attack inflict Break.
Phys Def Down Weapon
Gem-electric
25% Raises chance of an auto-attack reduce enemy's physical defence.
Ether Def Down Weapon
Gem-ice
25% Grants a chance of successful attacks reducing Ether Defence.
First Attack Plus Weapon
Gem-electric
150% Increases damage on the first attack of combat.
Back Atk Plus Weapon
Gem-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
Gem-fire
100% Increases Slow resistance.
Bind Resist Armour
Gem-fire
100% Increases Bind resistance.
Paralysis Resist Armour
Gem-water
100% Increases Paralysis resistance.
Sleep Resist Armour
Gem-fire
100% Increases Sleep resistance.
Confuse Resist Armour
Gem-ice
100% Increases Confuse resistance.
Arts Seal Resist Armour
Gem-wind
100% Increases Arts Seal resistance.
Daze Resist Armour
Gem-electric
100% Increases Daze resistance.
Topple Resist Armour
Gem-wind
100% Increases Topple resistance.
Lock-On Resist Armour
Gem-ice
100% Increases Lock-On resistance.
Pierce Resist Armour
Gem-electric
100% Increases Pierce resistance.
Divine Protect Armour
Gem-earth
100% Increases Instant Death resistance.
Debuff Resist Armour
Gem-water
100% Resistance against all status ailments, except Topple and Daze.
Good Footing Armour
Gem-wind
100% Increases Blow-Down resistance.
Bleed Defence Armour
Gem-earth
100% Reduces Bleed damage taken.
Blaze Defence Armour
Gem-ice
100% Reduces Blaze damage taken.
Chill Defence Armour
Gem-fire
100% Decreases Chill damage taken.
Poison Defence Armour
Gem-water
100% Reduces Poison damage taken.
Spike Defence Armour
Gem-water
100% Reduces Spike damage taken.
Physical Protect Armour
Gem-earth
50% Activated at the start of a battle.

Reduces physical damage.

Ether Protect Armour
Gem-ice
50% Activated at the start of a battle.

Reduces ether damage.

Auto-Atk Stealth Weapon
Gem-ice
50% Reduces accumulated aggro from auto-attacks.
Arts Stealth Weapon
Gem-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
Gem-wind
50% Increases Speed of auto-attack.
Damage Heal Armour
Gem-water
200 Chance to recover when attacked.
Recovery Up Armour
Gem-water
50% Recovery amount increased.
Aura Heal Armour
Gem-water
150 Health is gained every 2 seconds.
Arts Heal Weapon
Gem-water
150 Using Arts heals HP.
Unbeatable Armour
Gem-water
50% Raises the chance of surviving with 1 HP when Incapacitated.
Daze Plus Weapon
Gem-electric
100% Increases duration of Daze.
Topple Plus Weapon
Gem-wind
100% Extends Topple time.
Buff Time Plus Armour
Gem-fire
150% Extends Buff time.
Debuff Plus Weapon
Gem-earth
150% Extends gem Debuff time.
Weapon Power Weapon
Gem-fire
50% Boosts activation rate for gems mounted on weapons.
Night Vision Weapon
Gem-earth
50% Increases attack accuracy at night.
Initial Tension Equipment
Gem-fire
100% Increases starting battle tension.
Aggro Up Weapon
Gem-fire
50% Increases Aggro in battle.
Aggro Down Weapon
Gem-earth
50% Decreases Aggro in battle.
Tension Swing Armour
Gem-electric
50% Makes tension change more easily.
Daze Tension Weapon
Gem-electric
25 Tension is raised by attacking a Dazed enemy.
Revival HP Up Equipment
Gem-fire
30% Increases amount of HP recovered when revived.
Talent Boost Weapon
Gem-ice
12 Increases Talent Gauge gain from auto-attacks, but halves damage.
Heat Sink Weapon
Gem-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
Gem-wind
25% Increases Movement Speed.
Earth Cloak Equipment
Gem-earth
60% Decreases Land enemy search range.
Aquatic Cloak Equipment
Gem-water
60% Decreases Water enemy search range.
Aerial Cloak Equipment
Gem-wind
60% Decreases Flying enemy search range.
Auto-Heal Up Armour
Gem-water
25% Increases non-combat healing rate.
Fall Defence Armour
Gem-wind
75% Reduces falling damage.
Terrain Defence Armour
Gem-water
75% Decreases damage from the terrain.

Special

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

Name Type Element Max. (*) Effect
EXP Up Equipment
Gem-fire
200% Increases Experience gained.
AP Up Equipment
Gem-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.

Start a Discussion Discussions about Gem

  • Ether deposit maps

    15 messages
    • In that order, as well. Let me know what you decide on, though for the record, I'd be okay with just a traingle of sorts.
    • Will do. Though if I go for a triangle, I wanna see if I can find one without the rounded corners.
  • Linking to gem pages

    12 messages
    • Grrr. You and your easy edits, taking over me on the leaderboard...
    • You can always do a bunch of these easy edits to keep ahead of me in total edit count. Though I do wanna make clear that I feel like I'...

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