Simple and a little odd
This is pretty straightforward, but was thinking it would be polished granite, not matte.  Not a huge deal, it's just more unusual to see granite buffed down.  I like that it's a great way to use offcuts or other "non usable" pieces of granite for tile or other industries.  What I don't like is the notch that the cards fit into isn't smooth at all.  You can tell where the saw blades cut the notch out so the business cards don't sit nice and straight/flat inside; it's rough and uneven in the bottom of the notch and for the price I'd expect it to be smooth inside.  There are felt pads on the bottom corners to prevent scratching, and of course the bottom isn't finished at all.  You need to have a nice full stack to fill in the notch or the cards lay at a steep angle.  Probably wouldn't use this if you're expecting to have a lot of people taking your cards as there's no way to keep them from falling over/falling out or keeping them looking neat.  It looks/works better if you have vertical cards also instead of the standard horizontal business card.
Rating: 3 stars