pepperlola Looks like Moroccan cement tile. Mosaic House in NYC has this same pattern/tile called Snowbank on their website: http://www.mosaichse.com/cement48.html.
Black and white slate tiles in the guest bathroom act as a neutral shell to the vibrant Moroccan cement tile backsplash that reaches all the way under the sink.Medicine cabinet: Restoration Hardware; sink: Gilford, Kohler; light: Bilux Sconce, Fabulux
A strip of Moroccan tiles helps to define the sink and mirror and gives the impression that the bath is roomier than it really is. The wall-mounted sink is a smart choice not only because of its pared-down scale, but also because it doesn't obscure the beautiful tile motif.