Sand Glass

Sand Glasses are works of craftsmanship in which two sheets of glass show an amount of sand in two colors, which is immersed in water. When the sand glass is turned, the sand, traditionally in black and a light color, moves down, creating new dunes and creating new drawings as the colors settle.

A blue sand glass.

It is a piece of craftsmanship found in Brazil, on the streets and stores, in many colors and sizes.

Sand glass, as the sand moves, just after being turned.