[Dottore]

We have the IDENTICAL tile on our patio at home. (I would post a picture but we are not at home this week.)

A couple of comments: we love this tile outside, but it is naturally uneven, and even has a few sharp edges where the slate was split. I'm not sure how good this would work indoors - particularly if you have kids running around in bare feet etc. It will certainly ruin your wife's nylons - should she walk around the house in these.

In the picture you posted, you can see these sharp edges: they are the bits ringed in white.

Also: the rust coloured stuff is iron ore - or something ferrous. Unless you seal the tile properly, this rust colour will rub off a bit on your feet and socks, and may also crumble slightly in some places. As I said, we love the look of these colours outdoors, but I cannot imagine that this tile is very practical to have in the house.