Alexander Tile Available in glazed or matt finish in an extensive variety of colours and finishes, this clever little tile is supplied with a variety of varying angled faces, which when laid in formations can create different shades on a surface.
ROBERT DICK CONVEX AND CONCAVE TILES, 1960s
Eliza Mikus Handmade tiles can be colour coordianated and customized re. shape, texture, pattern, etc. by ceramic design studios
AlpStories Community Store by Brigada, Zagreb – Croatia » Retail Design Blog
Arc tiles... I've pinned these before, but this link goes to actual design info on the tiles rather than just a picture.
The Infinity of the Room by Pia Jensen.
FLOORS: abstract tile floor
The illusion of 3D in 2D masterfully created and used as the design for a parquet floor.