Mormonernes Grundlægger Joseph Smith brugte i sin ungdom seer-sten til at søge efter skatte. Senere brugte han dem til at modtage profetier og andre beskeder fra Gud. Det fungerede lidt ligesom med en krystalkugle, blot var stenene ikke gennemsigtige. Hans metode var ifølge hvad jeg har læst, at lægge stenen i en hat, stikke ansigtet ned i hatten, læse eller tyde hvad han så og bagefter skrive det ned eller på anden måde meddele det til sine omgivelser. Her er et kort udtog fra en artikel fra internettet:
According to Latter Day Saint theology, seer stones were stones used by Joseph Smith to receive revelations from God. Some other early Latter Day Saints also possessed and used seer stones, including one of Smith's self-professed successors, James Strang.
Smith owned at least two seer stones, which he had earlier employed for treasure seeking before he founded the church. Other early Mormons, such as Hiram Page, David Whitmer, and Jacob Whitmer, also owned seer stones. Seer stones are mentioned in the Book of Mormon and in other Latter Day Saint scriptures, usually by the term "Urim and Thummim". James Strang, who claimed to be Smith's successor, also unearthed what he said were ancient metal plates, known as the Voree plates, and translated them using a seer stone.