Here we see a KDP crystal hanging from a glass rod within a supersaturated solution of KDP in water. The excess KDP salt adjacent to the crystal deposits on the crystal surface and the salt concentration in the solution momentarily diminishes. Thus, the solution adjacent to the crystal becomes lighter than the rest of the solution and a buoyant plume is formed. The plume is further distorted by the crystal rotation. The plume has been visualized by a color schlieren technique. The bluish background arises from the blue color of the rainbow filter initially picked up by the light beam, before the start of the experiment.