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 (×ורי×) means "light" and Thummim (תמי×) probably means "darkness/truth." Possible recreation; Urim, white stone means no answer, and Thummim black stone means yes. Beautifully designed necklace with real stones.