Medium, 7” x 12” Moving Sand Pictures – Liquid with black sand, four types of sands and a fine glitter. The glass is framed with a knotty cherry or alder wood. Air bubbles hold up the sand creating unique scenes with every turn, pictures may take from just minutes to many hours to finish a scene. Some sand is heavier than others so the sands will never mix. Some of the sands are transparent and some opaque giving the pictures a 3-D effect.