Urim and Thummim or Seer Stones?

“While the statement has been made by some writers that the Prophet Joseph Smith used a seer stone part of the time in his translating of the record, and information points to the fact that he did have in his possession such a stone, yet there is no authentic statement in the history of the Church which states that the use of such a stone was made in that translation. The information is all hearsay, and personally, I do not believe that this stone was used for this purpose. The reason I give for this conclusion is found in the statement of the Lord to the Brother of Jared as recorded in Ether 3:22–24. These stones, the Urim and Thummim which were given to the Brother of Jared, were preserved for this very purpose of translating the record, both of the Jaredites and the Nephites. Then again the Prophet was impressed by Moroni with the fact that these stones were given for that very purpose. It hardly seems reasonable to suppose that the Prophet would substitute something evidently inferior under these circumstances. It may have been so, but it is so easy for a story of this kind to be circulated due to the fact that the Prophet did possess a seer stone, which he may have used for some other purposes” (Joseph Fielding Smith, “Doctrines of Salvation,” Vol. 3, 225-26).