Mo'at's thorn is part of Mo'at's Tsahìk garb, attached to the knife worn across her neck. It is with her at all times.
Description[]
The spike measures several dozen centimeters in length and comes from an unknown but sacred vine to the Na'vi. It is kept in a sheath attached to Mo'at's band, and thanks to the curved base, it is easy to grip and pull out.
The item has ritual significance, though its only known use is to collect blood samples from avatars for identification.
Role in the film[]
The only time Mo'at used it was when Jake Sully arrived in the Omatikaya Hometree. Upon learning that the man was an avatar, Mo'at took a sample of his blood with the thorn to taste it and confirm his true nature. The blood stains on the spike suggests that Mo'at had recently used it for similar purposes.