Admiral Robert Fitzroy made the storm glass famous following his historic journey on the HMS Beagle. Although the inner workings of the storm glass remain a mystery, it is thought that changes in weather patterns trigger electromagnetic activity, which in turn activates the crystals inside the sealed glass chamber, causing them to move (and the chamber to fill with crystals as the air pressure decreases).

This elegant storm glass makes for a stunning decorative gift idea for adults and inquisitive children with an interest in meteorology, science and mystery.