The data crystals (データクリスタル) are long, pillar-like crystals found in the Device Towers in Liberl.
Background[]
The crystals and data encrypted within them date back from the early Dark Ages. The records were written by Celeste D. Auslese, founder of the Liberl Kingdom. Using the Capel supercomputer, Albert Russell manages to decrypt the data in the crystals. The data reveals a message from Celeste regarding the sealing of the Aureole.
The Data Crystal Z does not contain readable data, but instead information about Zemurian Ore and its processing into several types of weaponry, that Prof. Russell was able to use to develop the ore into usable weapons. The Crystal was also able to transfer another piece of ore from one of the terminals in the Cradle District.