The gnome emissary fragment is an item obtained during the Birthright of the Dwarves quest. It is one of the memory fragments that must be captured to repair the player's memory. Before the player catches it, it is called a Laneel fragment. Once the player has captured enough of each fragment, they must be used on the corresponding memory voids.
Gnome emissary fragments must be used on the memory void that gives the message: "What would a gnome be doing here?"