Data Crystal

Data Crystal (データクリスタル) are item drops that are produced from the slain bodies of monsters in YGGDRASIL.

Description
One of the fundamental building blocks in YGGDRASIL, these crystals are what makes the flexible system of customization in YGGDRASIL possible. Data crystals can be used in customization for all facets of the game, ranging from changing the qualities of locations, crafting NPCs, designing personal weapons, altering players appearances, etc. However harvesting data crystals is difficult as they do not come in the same quality as they always do.

Appearance
It's a a small crystal that was used for the storage of data, very similar to a data card or memory crystal.

Abilities
The possible uses of data crystals could be considered endless such as upgrading a player's standard gear to Divine Class. However in order for crafting Divine Class items certain materials are necessary. YGGDRASIL magic items are created from these embedded computer data crystals, however since the performance of computer data crystals dropped by monsters is uneven, the manufacture of Divine class items makes it necessary to have several “extremely rare loot” computer data crystals for it to be possible. In order to elaborate, if a player wanted these computer data crystals to be embedded into a container such as a sword-type weapon it had to be a weapon forged from ultra rare metal for it to be possible.

Though data crystals allow for near unlimited customization, there are limits to their abilities. For example, data crystals are unable to produce items that did not originate from the game, such Clementine's Stiletto.

Trivia

 * Data Crystals in the Great Tomb of Nazarick are sealed somewhere in the Treasury.