Kraters are ancient Greek vessels used for diluting wine with water. It usually stood on a tripod in the dining room, where wine was mixed. Kraters were made of metal or pottery and were often painted or elaborately ornamented. he volute krater has an egg-shaped body and handles that rise from the shoulder and curl in a volute (scroll-shaped form) well above the rim. A volute is a spiral scroll usually decorating capitals of the Ionic order.