Here we see a KDP crystal placed over 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 rises from the corners of the crystal. The crystal is not given any rotation in these experiments. The plume has been visualized by a color schlieren technique. The greenish background arises from the green color of the rainbow filter initially picked up by the light beam, before the start of the experiment.