|'Granada' range tiles, FiredEarth.com|
The borders between the smaller protruding glazed shapes are recessed and unglazed, so that each tile looks as if it's been assembled from a mosaic of smaller and more complicated tile shapes. It's a nice surface.
The Granada range of tiles is made in Spain and sold by Fired Earth. They also do other North African and Middle Eastern designs without the mosaic effect, like the Andalucia and Anatolia ranges.
(Thanks to Mark at FiredEarth Brighton for providing background info and letting me take the photos)