This amazing and mysterious liquid and crystal filled storm glass device is used for predicting the weather up to two days in advance. You'll see changes in the crystal formations for fair weather (clear liquid), rainy weather (murky liquid), thunderstorms (crystals at the top), cloudy skies with snow (large flaky crystals) and even windy weather (threads of crystals). Beautifully displayed in a black wood composite frame. 5-3/4" tall x 4" wide x 2" deep.