Time and space are one and all information contained within reality are available to those who can master their intellect and allow the stream of information to be downloaded directly into the brain -- bypassing the rational mind that would block anything received through such unconventional methods. The prophet sighs in contentment.
A crystal ball is a crystal or glass ball believed by some people to aid in the performance of clairvoyance. It is sometimes known as ashew stone (or show stone— "shew" is an archaic spelling of "show").
A body of water, either in a container or on the ground, used for this purpose, is called a scrying pool.
The Magical Crystal Ball
Use the magic of the crystal ball to predict your future.
Main articles: Scrying and Crystal gazing
The art or process of "seeing" is known as "scrying", whereby images are claimed to be seen in crystals, or other media such as water, and are interpreted as meaningful information. The "information" gleaned then is used to make important decisions in one's life (i.e. love, marriage, finances, travel, business, etc.).
By contrast, some professed seers say that they do not actually see images in the crystal itself, but rather that the featureless interior of the stone facilitates them in clearing their mind of distractions so that future truths or events will become known to them.
When the technique of scrying is used with crystals, or any transparent body, it is known as crystallomancy or crystal gazing.