Urim & Thummim Necklace Recreation. Real stones of what the Urim & Thummim would have look like. Urim and Thummim Exodus 28:30 "And thou shalt put in the breastplate of judgment the Urim and Thummim; they shall be upon Aaron's heart when he goeth in before the Lord." The Urim and Thummim was God's way of answering His people. Urim (אורים) means "light" and Thummim (תמים) probably means "darkness/truth." Possible recreation; Urim, white stone means no answer, and Thummim black stone means yes. Beautifully designed necklace with real stones.