Rainbow Vision Sand Picture- Grey Great educational gift for children or grandchildren. Check out the Pitkin Stearns website to see the 30+ Scientific Principles! Handcrafted in Lustenau, Austria by artist Klaus Bosch. Mesmerizingly different with each turn. 4-1/3 x 6-2/3 with a plastic frame and base. Soothing, relaxing, and just plain cool! A sandpicture will do several times a day what mother earth takes millions of years to accomplish. Watch mountains, valleys and dunes create before your eyes!