Conjured item

An item is conjured when it is created by an ability, power or spell. Conjured items function like normal items during play, but they disappear when the character logs out (or gets disconnected) for 15 minutes or more. Conjured items cannot be sold on the auction house nor to a vendor, although some can be traded to another character, and you could charge money for the conjured item in the trade.

Notable conjured items:
 * Conjure Refreshment (by a Mage, can share)
 * Healthstones (by a Warlock, can share, Unique)
 * Soulstones (by a Warlock, Bind on Pickup and Unique, but can be used on others by the warlock.)
 * Cauldron items, created by alchemy, create conjured potions of protection corresponding to the type of cauldron. The potions bind on pickup and are unique. The cauldron, once used, lasts 5 minutes or until 25 potions are distributed.

As of Patch 3.0.2, these conjured items do not fade after logging out for any length of time:
 * Conjured Mana Gems (by a Mage, Bind on Pickup and Unique)
 * Firestones (by a Warlock, Bind on Pickup and Unique)
 * Spellstones (by a Warlock, Bind on Pickup and Unique)

Conjuring items via a spell consumes mana, so plan ahead and ask the mage or warlock for the item before the battle starts and mana becomes a critical resource for them.

Note that the items are a class of items, and the unique items are unique for each specific item within that class; for instance, a mage could be carrying several different Mana Gems, but although a warlock could create and give away several different Healthstones, any one person can only have one healthstone of any level at a given time. In the mage's case, this has diminishing benefit; each item takes an inventory slot, since uniques do not stack, and the benefits scale with the level of the conjuration, so only the top couple currently conjurable will be significantly beneficial.

Also note that although a warlock could carry multiple Soulstones, Firestones, and Spellstones of different levels, each of these items is used only one at a time, so there is no point to doing so. Soulstones have an application cooldown that ensures that a warlock can have only one soulstone applied at a time. Firestones and Spellstones are akin to Wizard Oils (these occupied the wand slot prior to Echoes of Doom), and so are applied actively for an hour each.