Storm Glass - TOOGOO(R)Weather Forecast Crystal Tempo Drops Water Shape Storm Glass Home Decor 8*18cm A transparent solution consisting of several chemical substances in a glass container. Because of climate change, the shape of a variety of crystal will have a change. Because it is a kind of crystal, so its change is not fast, it will change with the weather slowly change. Can be free to place, please enjoy the changes in a favorite place.