Dark Crystal ( term ) The Dark Crystals are the counterparts of the elemental Light Crystals , and are referred to as " Dark " for being either hidden from the rest of the world or aligned to darkness itself . Appearances . " Final Fantasy " . A Dark Crystal ( called " Orb " in the NES version ) can be found in the middle of the Chaos Shrine . While the game ' s plot never explicitly states any detail , Garland used this Crystal as a means of connection to the 2000 - year - old past , possibly to communicate with the Fiends of that time , and possibly to travel there upon death . After the Warriors of Light restore light to the four elemental crystals , the Dark Crystal disappears in a flash , and the pedestal where it once stood allows travel 2000 years into the past . It is explained in " Dissidia Final Fantasy " that Garland ' s Dark Crystal drew its power from The Void , allowing Garland to travel into the past and become Chaos . " Final Fantasy III " . The Dark Crystals of Fire , Wind , Earth , and Water of the World of Darkness are the counterparts to the original Crystals from the world of the Warriors of Light . As the Warriors of Light are the envoys of the Crystals of Light , the Crystals of Darkness also have their own four Warriors of Darkness . When the Warriors of Light enter the World of Darkness to defeat the Cloud of Darkness , they discover the Crystals of Darkness , which are also kept by monsters , who strengthen the Cloud of Darkness . Ahriman guards the Dark Earth Crystal , Cerberus guards the Dark Wind Crystal , Echidna guards the Dark Water Crystal , and the Two Headed Dragon guards the Dark Fire Crystal . " Final Fantasy IV " . Four Dark Crystals exist in the Underworld , to counter the four Crystals of the Blue Planet ' s Overworld . However , the location of only two Crystals is known : one is kept by the dwarves at the Dwarven Castle , while another is kept in the Sealed Cave . Golbez steals the Dark Crystal from the Dwarven Castle , but the seal on the cave protects the last Dark Crystal from him . Eventually , Giott fears that Golbez will be able to break the seal by force , and gives the party Luca ' s necklace to open the seal . The party retrieves the Dark Crystal , but as they leave , Golbez asserts his mental domination of Kain and seizes it from the party . " Final Fantasy IV - Interlude - " . The Dark Crystal is silently shedding its light inside the Crystal Chamber in the Sealed Cave . The entrance to the Crystal Chamber is guarded by the Demon Wall . After Cecil and company arrives inside the chamber , they find Rydia lying on the floor of the chamber . The four Dark Crystals , along with numerous other crystals of both light and darkness from other worlds , appear . Rydia and Luca arrive too late at the Dwarven Castle to prevent the Mysterious Girl from taking the Dark Crystal there . The two again retrieve the Dark Crystal from the Sealed Cave , but the Mysterious Girl arrives and takes it from them . The Dark Crystals , along with the Crystals of the Overworld , are retrieved from the Depths of the True Moon . " Final Fantasy XII " . The large crystalline rocks scattered around the Giza Plains are known as Dark Crystals . During the Dry they absorb sunlight , which can be drained into Shadestones to create items known as Sunstones . " Final Fantasy XIV " . Dark Crystals are objects used by the Ascian s to possess mortal bodies . An artificial Crystal of Darkness is delivered to Minfilia as a potential means of combating Lahabrea . A dark crystal resides on top of the Flying Tower , which adventurers constantly try to destroy . Inside the Crystal resides Darklord Craydall , who fills the tower with the power to sustain the monsters inside it once the Miasma cleared . It is also said that his daughter Mira draws her powers from the crystal . " " . A Dark Crystal , aligned with the Void that existed before the universe , appears as an opposite of the four Crystals of creation . " Dissidia Final Fantasy " . The Dark Crystals are a crucial part of the Emperor ' s scheme , having manipulated Jecht to fight Tidus so that he would receive the crystal Cosmos implanted in him during the last cycle of conflict while he was a warrior of Cosmos . As a result , because Jecht was infused with the powers of Chaos , the Crystal he received was attuned to darkness and the Emperor seized the crystals created from Jecht with the intent that , as the Warriors of Cosmos survived the death of their goddess , the Emperor would likewise survive Chaos ' , and would be free to rule all existence unopposed with both gods dead . The Dark Crystals the Emperor speaks of are never seen in - game . One of the Components that can be created through Battlegen is the Blackcrystal Sliver , found in the Chaos Shrine as a reference to the Dark Orb from the first game .