Jade Peg
From Shadow of the Throne Wiki
Jade Pegs are complex, sculpted cylinders of Jade, which were once used in the manufacture of Automata in the Golden Age, where they served as a form of memory and pattern storage. Their purpose and manufacture have been lost to Creation for centuries, with one exception known only to a few: the Realm Scavenger Lord Ragara Szaya, guessing at their potential, employed numerous jade pegs in the construction of the Gateway-playing mechanism Ice Mind.