Medium Summer Turquoise - Cherry Wood 7'' x 12'' Moving Sand Pictures, Turquoise liquid with black sand, green sands from South America, four types of white sands and green glitter. The glass is framed with a knotty 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. The black sand is heavier than the white sands so the sands will never mix. Some of the sands are transparent and some opaque giving the pictures a 3-D effect.