Ether Def Up

Ether Def Up (Japanese: エーテル防御増, Ēteru Bōgyozō) is a Gem in Xenoblade Chronicles that increases Ether Defence, which reduces the amount of damage that the character receives from ether-based attacks.

Gem stats[]

	Ether Def Increase
	5-10
	15-20
	25-30
	35-40
	45-50
	75-100

Gem sources[]

Ways to obtain Ether Def Up gems, including completing Quests, trading with NPCs, and completing categories in the Collectopaedia.

	Trade Zukazu (Colony 9, 4) Miller (Colony 9, 1) Leopold (Colony 9, 1*)
	Quest Overworked and Underpaid (B route) Trade Leopold (Colony 9, 5*)
	Collectopaedia High Entia Tomb - Strange category complete Quests A Young Captain's Suffering Preparing for Adventure 2
	Collectopaedia Agniratha - Bug category complete Quest Talia's Research
	Quest Getting to Know Dorothy Trade Shura (Tephra Cave, 1*)
	None

Crystal and cylinder sources[]

Places to mine for Ether Def Up crystals, and enemies which drop Ether Def Up Crystals and Cylinders.

	Mining Tephra Cave GF (map) - NW of Spring of Grief Enemies Dark Kisling Itinerant Dorothea Lurker Krabble (QE) Cellar Bugworm Verdant Bluchal Light Skeeter Leg Skeeter Gust Vang Fierce Vang (QE) Leg Antol Colony Krabble Baby Armu Common Caterpile
	Mining Ether Mine GF (map) - E of Test Pit 4 Ether Mine GF (map) - S of Test Pit 4 Ether Mine B2F (map) - NW crystal deposit Ether Mine B3F (map) - N-most crystal deposit Enemies Ether Bunnia
	Mining Ether Mine GF (map) - E of Test Pit 4 (Requires Colony 6 Nature Level 3) Ether Mine GF (map) - S of Test Pit 4 (Requires Colony 6 Nature Level 3) Valak Mountain Upper Level (map) - Nagul Waterfall Enemies Calm Anzabi Hidden Gamigin M34 Honey Bee Unit M35 Wasp Unit Hover Astas Petra Apis Bosque Hode Snowi Taos
	Mining Ether Mine GF (map) - E of Test Pit 4 (Requires Colony 6 Nature Level 4) Ether Mine GF (map) - S of Test Pit 4 (Requires Colony 6 Nature Level 4) Fallen Arm Lower Level (map) - E of Giant Mechon Debris Fallen Arm Lower Level (map) - Digit 2 S on a platform at sea level
	Mining Ether Mine GF (map) - E of Test Pit 4 (Requires Colony 6 Nature Level 5) Ether Mine GF (map) - S of Test Pit 4 (Requires Colony 6 Nature Level 5) Bionis' Interior Lower Level (map) - S of Terminal Nerve Tower Enemies Reckless Galdon Flailing Bracken Opulent Flamii Resplendent Flamii Lahar Flamii

Unique armour and weapons[]

Unique Armour and Weapons with Ether Def Up gems permanently attached to them.

	None
	None
	None
	None
	None
	None

Gems in Xenoblade Chronicles
Fire	Aggro Up · Bind Resist · Blaze Attack · Blaze Plus · Buff Time Plus · Chill Defence · EXP Up · Initial Tension · Revival HP Up · Sleep Resist · Slow Resist · Spike · Strength Down · Strength Up · Weapon Power
Water	AP Up · Aquatic Cloak · Arts Heal · Aura Heal · Auto-Heal Up · Damage Heal · Debuff Resist · HP Steal · HP Up · Paralysis Resist · Poison Defence · Recovery Up · Spike Defence · Terrain Defence · Unbeatable
Electric	Back Atk Plus · Daze Plus · Daze Resist · Daze Tension · Daze Up · Double Attack · Electric Plus · Ether Up · First Attack Plus · Lightning Attack · Paralysis · Phys Def Down · Pierce Resist · Tension Swing
Ice	Arts Stealth · Auto-Atk Stealth · Bind · Blaze Defence · Chill Attack · Chill Plus · Confuse Resist · Ether Def Down · Ether Def Up · Ether Protect · Heat Sink · Lock-On Resist · Slow · Talent Boost
Wind	Aerial Cloak · Agility Down · Agility Up · Arts Seal Resist · Bleed Attack · Bleed Plus · Break · Fall Defence · Good Footing · Haste · Quick Step · Topple Plus · Topple Resist · Topple Up
Earth	Aggro Down · Attack Plus · Attack Stability · Bleed Defence · Critical Up · Debuff Plus · Divine Protect · Earth Cloak · Ether Down · Muscle Up · Night Vision · Physical Protect · Poison Attack · Poison Plus