Mini Storm Glass Dimensions: 6cm x 12cm Comes with wood base (predicts weather as the liquid changes from clear to crystal to cloudy) Similar devices were famously used in the 1800s by captain of the HMS Beagle Admiral Robert FitzRoy
You can inscribe messages on the base with various pens and/or brushes for a personalized touch. Clean elegant packaging accompanies this natural weather forecaster to make a unique and interesting gift.
The Storm Glass may require a week for the crystals to adapt to the environment. If you want to see a quicker test display, the storm glass can be placed in the refrigerator frozen for 30-60 minutes, then take a look at the changed display.