A center panel with figure representations of people, animals, or scene in relief in a Hellenistic or Roman mosaic. Emblemata were usually executed in opus vermiculatum, very fine work with tiny tesserae (stone, ceramic glass, or other hard cubes), and surrounded by floral or geometric designs in coarser mosaic work. Although some emblemata were large scenes with several figures, most were small and portable. They were also used to decorate the inside of bowls, attached by solder. The first known emblema dates from about 200 BC.