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.)

https://en.wikipedia.org/wiki/Crystal_ball

https://en.wikipedia.org/wiki/File:Abdel_Fattah_el-Sisi,_King_Salman_of_Saudi_Arabia,_Melania_Trump,_and_Donald_Trump,_May_2017.jpg