Unique

Unique is a property of certain items that prevents you from equipping multiple copies of that item at one time.

Normally, if you obtain 2 identical items, and you have 2 equipment slots that fit them, you can equip both. For instance, if you obtain 2 of Koda's Gift, you can equip both at once (in your two accessory slots).

But with unique items, you can only equip one copy at a time. For instance, if you obtain 2 Ancient Karka Shells, you can only equip one of them. It only takes up one of your accessory slots, and the second slot can be used to equip a different accessory, but not a second copy of the same one.

This does NOT prevent you from equipping two items with equivalent stats. For instance, you can equip 1 Baelfire's Ember and 1 Forgeman's Gear, even though they are functionally equivalent. (Like in this example, most ascended rings and accessories are marked unique but come in equivalent pairs, so their uniqueness has very little impact other than to trip up new players.)

An attuned or infused item counts as different for purposes of uniqueness. However, items with different upgrade components still count as the same. (Note: infusions are upgrade components; inserting one is not the same as infusing an item, and does not cause the item to be considered different.)

Note that "Unique" does not imply that you can only get one of an item. In most cases, you can obtain multiple copies of the item. You just cannot equip more than one of them on the same character at the same time.

Examples

Can be equipped together

• A Ring of Red Death and a Crystalline Band — they are different items, even though they are both Berserker stats.
• A Ring of Red Death and a Ring of Red Death (Infused) — these are considered different items.
• A Ring of Red Death and an Attuned Ring of Red Death — again, these are different items.

Cannot be equipped together

• Two Ancient Karka Shells, even though you have two accessory slots.
• A Ring of Red Death with an empty infusion slot, and a Ring of Red Death with a Versatile Simple Infusion slotted — they are the same item, regardless of the slotted upgrade.

Notes

• Uniqueness is mostly correlated with ascended rarity, but there are ascended items without Unique, and non-ascended items with Unique.
• Certain trophies and other items have the unique property, even though it has no impact on their functionality. Similarly, the unique property has no effect on back equipment and amulets, because only one of each type can be equipped anyway.
• The technical implementation is that no two unique items with the same item id may be equipped. This is why inserting upgrades makes no difference, but infusing or attuning a ring does.

Trivia

• Historically, ascended rings and accessories with equivalent stats had different types of infusion slots (offensive vs defensive), and so were not quite equivalent. All infusion slots were unified on July 26, 2016, eliminating that distinction and making these items exactly equivalent.

List of unique equipment

Trinkets

Almost all ascended trinkets are Unique, except for the following items:

•  Assaulter's Besieger Ring (Infused)
•  Assaulter's Energized Loop (Infused)
•  Assaulter's Woven Band (Infused)
•  Attuned Assaulter's Besieger Ring (Infused)
•  Attuned Assaulter's Energized Loop (Infused)
•  Attuned Assaulter's Woven Band (Infused)
•  Attuned Defender's Besieger Ring (Infused)
•  Attuned Defender's Energized Loop (Infused)
•  Attuned Defender's Woven Band (Infused)
•  Attuned Healer's Besieger Ring (Infused)
•  Attuned Healer's Energized Loop (Infused)
•  Attuned Healer's Woven Band (Infused)
•  Attuned Malicious Besieger Ring (Infused)
•  Attuned Malicious Energized Loop (Infused)

•  Attuned Malicious Woven Band (Infused)
•  Berg's Token
•  Defender's Besieger Ring (Infused)
•  Defender's Energized Loop (Infused)
•  Defender's Woven Band (Infused)
•  Hardened Keep Fragment
•  Healer's Besieger Ring (Infused)
•  Healer's Energized Loop (Infused)
•  Healer's Woven Band (Infused)
•  Jagged Keep Fragment
•  Malicious Besieger Ring (Infused)
•  Malicious Energized Loop (Infused)
•  Malicious Woven Band (Infused)
•  Mist Pendant

•  Mist Talisman
•  Narella's Bauble
•  Pact Badge
•  Pointed Keep Fragment
•  Rounded Keep Fragment
•  Spectral Balm
•  Spectral Juju
•  Spectral Talisman
•  Spectral Ward
•  Triforge Pendant
•  Wylenn's Manual of Style
•  Zane's Memento

Some non-ascended trinkets are Unique:

•  Ancient Karka Shell
•  Polla

Back items

Many, but not all, ascended and legendary backpacks are Unique, but this has no impact on their use because you can only equip one back item at a time anyway.

Other items

•  Bag of Spirit Shards
•  Birthday Blaster
•  Bundle of Children's Toys
•  Destroyed Matrix Cube Key
•  Exalted Portal Stone
•  Frozen Fish
•  Gift of Magnanimity
•  Holographic Communicator
•  Huge Bag of Spirit Shards
•  Large Bag of Spirit Shards
•  Matrix Cube Key
•  Moa Meat
•  Ominous Portent
•  Scroll of Knowledge
•  Scroll of Knowledge
•  Small Bag of Spirit Shards
•  Stone Dwarf Thumb
•  Svanir Disguise: Chest
•  Svanir Disguise: Helm
•  Svanir Disguise: Legs
•  Wiley Pirate Paper Scraps