A steady staring into the depths of a clear object, now usually a glass ball, with the view of arousing visual perceptions.(noun)
The Century Dictionary (Public Domain)
Use "crystal-gazing" in a sentence
"The practice of scrying, or crystal-gazing, would be practiced by the English magus John Dee (and the charlatan Edward Kelley) after Dee's visit to Urbino in 1563 and the publication of his Mathematicall Praeface to Euclid's Elements."
"If you knew how many times I wished I could see the future … heh, and how many people expect me to have that crystal-gazing ability …"
"They are no different from the astrology, alternative therapy, crystal-gazing believers."