Clairvoyance is generally associated with the element water. The book of Genesis says that God separated the waters above from the waters below.
The waters above represent the cosmic library in which the archives of the universe are kept. This library, referred to in the esoteric tradition as the Akasha Chronica, bears the imprints left by every creature that has ever existed and of every event that has ever taken place on earth since the beginning of time.
This is why some clairvoyants work with water; they stare into a bowl of water in order to ‘see’.
It is not that they actually see anything in the water, but through it, they make contact with the waters above and with the images floating in those waters.
In this way, their spirit finds what they are looking for.