A sand glass is a display in which there are multiple colors of sand in water between two sheets of glass. Unlike sand paintings, a sand glass is meant to be turned; the sand, traditionally in black and a light color, moves into new shapes with each turn. The term "sand glass" is a translation of the Portuguese phrase "quadro de areia", literally "sand frame" or "sand picture". Unlike sand paintings, which are a traditional craft, these are found around the world in many colors and sizes.