This is another one of those stones that is super easy to come by and use. Many people use clear quartz for scrying and crystal gazing. Clear quartz is also used in creating pendulums. Clear quartz is often used in, if you haven't already guessed it, psychic readings. I have also found this stone very useful in amplifying energies. There are times and places when you may need more energy that what you currently have. I find it extremely helpful when I need an extra boost in a ritual or if I need to amplify my focus (hello study sessions!) you can also use it to power through a more difficult work out. Let me know how you use clear quartz in the comment section below!
Cunningham, S. (1988). Cunningham's encyclopedia of crystal, gem & metal magic. St. Paul, MN, U.S.A.: Llewellyn Publications.