Krater Mosaic Krater A krater or crater was a large vase in Ancient Greece, particularly used for watering down wine. At a Greek symposium, kraters were placed in the center of the room. They were quite large, so they were not easily portable when filled. Thus, the wine-water mixture would be withdrawn from the krater with other vessels. This masterpiece is an entirely handmade mosaic reproduction created using the techniques of ancient romans called Opus tessellatum, cubic stones tiles mosaic. During its manufacture 8 mm stone and natural marble tiles are used, all together being fixed on mortar with a metallic structure. Material: Marble Dimensions: 31.5cm x 31.5cm View Photos For Further Details.