Sand O's Miniature 4’’ diameter moving Sand Pictures – Clear liquid with black sand, four types of white sands and blue glitter. The double strength glass is framed with black acrylic frame with a craddle base. 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.