Crystal gazing

Crystal-gazing (also known as crystal-seeing, crystallism, crystallomancy, gastromancy, and spheromancy) is a method for seeing visions achieved through trance induction by means of gazing at a crystal. Traditionally it has been seen as a form divination or scrying, with visions of the future, something divine etc., though research into the content of crystal-visions suggest the visions are related to the expectations and thoughts of the seer.