The storm glass was popularised by Admiral Robert Fitzroy after his historic voyage on the HMS Beagle. 

How the Storm Glass works is still a mystery, but it is believed that electromagnetic changes in weather patterns activate the crystals inside (sealed glass chamber fill with crystals when air pressure decreases). 

This is a gorgeous decorative gift idea for the adult who has everything or someone who finds meteorology fascinating. 

How to read:

A: Clear Liquid

Bright and clear weather

B: Cloudy Liquid

Sometimes with small stars and crystals at the top. Cloudy weather and often predicts thunderstorms and rain.

C: Small Stars in Liquid

Humid or foggy weather

D: Large Flaky Crystals

Cloudy skies, snow in winter. 

E: Threads of Crystals At The Top

Winy Weather

F: Crystals At The Bottom,

Frost may be coming.