Opus tessellatum mosaic (3rd century AD) | Latin name for the normal technique of Greek and Roman mosaic, made from tesserae that are larger than about 4 mm. Tesserae - is an individual tile, usually formed in the shape of a cube, used in creating a mosaic. It is also known as an abaciscus or abaculus.
opus sectile flooring from the house of the faun. materials were cut and placed into floors and walls to create patterns. this was a moderately expensive type of flooring.