Yes, it is indeed the real thing.
But what they send you is a little pellet of some of the lowest reactivity the mines produced.
It's meant for demonstrating radiation and for scientific curiousity, they're nowhere near hot enough to do any major damage as long as you handle it with care (do not eat / wear gloves when handling / keep it away from where you sleep at night)
I previously saw a company selling it in actual "rock" form, again extremely low radiation output, but good enough to put in a lead-lined case in a classroom to show the students what real Uranium looks like.