It is generally shown as a glowing teal/turquoise-colored, rotating, translucent crystal orb with a jagged surface emitting a flaring white aura, and is seen levitating with stone effigies of the past kings orbiting around it. Its immensely incomprehensible abilities provide the Atlanteans with extended longevity (capable of living for hundreds or thousands of years), semi-immortality, youth and beauty, and technological advancements.
Around 100,000 BC, a huge comet passed over the Earth. A large fragment broke off and landed in the kingdom of Atlantis. Upon examination, the Atlanteans found that it contained a massive crystal and uncovered the great properties it possessed. In time, they built their entire culture, civilization, and empire upon it. Since it is the sole source of all of their magical strength and power, it came to be known as the Heart of Atlantis.
The Atlanteans over-extended their power by dominating other civilizations with ease. However, this soon proved to be their undoing, as an accidental weapon discharge created a enormous tsunami that threatened to wipe out the entire empire. The Heart of Atlantis acted, bonding with the city's Queen to generate a protective barrier around the center of the city. Those within were saved but those who did not make it to the center of the city before the protective barrier fully enveloped it were shut out and ultimately killed as the tsunami wiped out all the surrounding area outside the force field surrounding the inner city that at that point was slowly sinking into the earth. The time and power consumed to save the people had resulted in the Queen being lost to the mystical Crystal forever.
Humbled and ashamed of how the loss of the empire and his wife came about, King Kashekim Nedakh had all past records of Atlantis destroyed and hid the crystal deep within the city through the throne room in the hopes of preventing history from repeating itself and Kida from suffering the same fate as her mother. Overtime all knowledge of their history and the crystal had been virtually forgotten. Sometime later, however, a shepherd named Aziz accidentally wandered into Atlantis and spent two years secretly immersing himself in the culture discovering how to locate the crystal and some of the properties it contained. He would record the information he called in a series of scrolls that would be converted over time into the Shepherd's Journal.
In 1911, an expedition funded by Preston Whitmore, and under the guidance of Thaddeus Thatch, ventured to Iceland where the Shepherd's Journal was successfully found. Three years later, Whitmore would fund another expedition, this time to following the directions supposedly written in the book that would lead the journeymen to Atlantis. Because of Thaddeus' passing, his grandson, Milo Thatch, would be the guide.
The expedition would reach Atlantis, finding, to their astonishment, that it was still alive, albeit barely thriving. Sometime later, the expedition's commander, Lyle Rourke, revealed to Milo that the group members were actually hired mercenaries, With their help, along with coercing Milo, Rourke proceeded with his attempt to steal the Heart of Atlantis and sell it on the black market, disregarding the consequences doing so would result in. Upon discovering the location of the crystal, it called to the King's daughter, Kidagakash "Kida" Nedakh, to be bonded with it. It is presumed that this was done to prevent immediate bloodshed.
Milo would lead an effort to stop Rourke from escaping with the crystal and succeeded. However, the battle that occurred caused a dormant volcano to awaken. Milo and the others manage to bring the Heart of Atlantis back to the city just in time for it to create a barrier that would protect the city from the flowing lava. It would then release Kida, having accomplished its task of saving the city. The Heart of Atlantis now once again hovers high above the city as a beacon of light and hope for the people.
Abilities and PowersEdit
The Heart of Atlantis contains mystical properties that even the Atlanteans cannot fully comprehend. The crystal shards are shown to provide phenomenal longevity, with the ability to extend an individual's lifespan by almost 500 times that of the average human. It also supplies knowledge into technological advancement that is still, to this day, far superior to that seen on the surface.
The Heart of Atlantis appears to be a sentient and autonomous being; as it freely has a mind and will of its own, able to act and think for itself and react on its own accord when necessary. It thus has its very own consciousness, emotions, sensations, and character.
This is generally shown whenever the city is unable to defend itself against a certain threat. If it senses danger, the Heart will turn crimson-red and use search light like beams of mystical light to search for a host. It will only accept an atlantean of royal blood to serve as its host. When it has found a royal family member, the crystal will turn back to its normal tourqouise color, attract the host's crystal pendant towards it, possess said host's mind and body, bond with them, then all the other search beams will gather together form one bright beam shining over the chosen host. The beam will slowly narrow until it is it is completely focused on the host's crystal which will then emmit a powerful burst of energy. The host will then be levitated into the sky until said host is absorbed by the crystal; at which point the crystal will use the host's life energy to generate the vast and immeasurable power required to materialize a tremendously strong impenetrable energy shield around the inner city of Atlantis to protect the people within the area.
When the crystal is enacting its abilities, it glows even brighter, and the king stones orbit it at an extremely high speed (which makes them appear as a glowing light blue ring). The processing can expend the Atlantean royal to the point where they become lost to the crystal forever if the time and power necessary to consume is too excessive. Furthermore, looking directly at the crystal as the force field merges with it can cause irreversible blindness as shown in the beginning of the movie when Kida's father tell her to close her eyes and look away from the crystal that just consumed her mother. While he himself does not remove his eyes from the crystal which then emits a bright flash that permanently blinds him.
The crystal is also conscious with regards to physical contact. If it feels that the holder is not of threat, it will do them no harm. Furthermore, the holder can use the crystal to heal wounds (and potentially illnesses, though this is never shown). However, if the crystal regards one touching it as a threat, it will transform them into a crystallized being. While they would still be alive, they could easily be shattered, thus resulting in their immediate demise.
The Heart of Atlantis can also influence its surroundings. Through its vastly potent supernatural abilities, an entire ecosystem is created and generated so that the Atlanteans can survive beneath the Earth itself. This includes the production of water used to constantly cool the flowing lava below, preventing it from ever burning and melting the kingdom. Flora and fauna are also influenced by the crystal, resulting in the production of unusual life forms.