Opus vermiculatum mosaics

Opus vermiculatum was the technique from which colourful mosaic was developed.
Using tiles cut according to the figure to be represented, it was composed of tiles of different shapes, some larger, others very small, which followed the contour of the images and the result was therefore of extreme pictorial finesse.
Sometimes they were also adorned with hard stones such as lapis lazuli or carnelian, which made the work even more spectacular.