Assertion: mosaic | /r/HasProperty | known to the romans
Facets:
value: as opus tessellatum
type: OTHER
Source sentences:
text: Known to the Romans as opus tessellatum, their mosaics were often made with small black, white, and coloured squares of all materials typically measuring between 0.5 and 1.5 cm, but fine details were often rendered using even smaller pieces as little as 1 mm in size.