According to Latter Day Saint theology, seer stones were used by Joseph Smith, as well as ancient prophets, to receive revelations from God. Members of the Church of Jesus Christ of Latter-day Saints believe that Smith used seer stones to translate the Book of Mormon.
Many members of the Church of Jesus Christ of Latter-day Saints believe that Joseph Smith used this seer stone (along with two others dubbed the "Urim and Thumim") in the Book of Mormon translation effort.