>>43339094REMINDER: depleted uranium is not a significant radiation hazard, but even the stable isotopes of uranium are heavy metals; they don't have to be radioactive to be chemotoxic and carcinogenic.
However, the description seems to imply that these dice are plated with... something. Palladium, maybe? If you track down these novelty DU dice, it'll probably be safe to handle them as long as you check and make sure there aren't any places where it's worn off.