One long black whisker from my black cat (and familiar). All of the whiskers from my familiar are collected naturally as he sheds them. The whisker is in a tall glass vial topped with a clear quartz crystal to charge and enhance its magical properties.

This item comes in a glass vial that measures 0.8" wide x 3.75" tall (without the cork top). The height of the jar with the cork top and crystals is about 4.25".
 
Magical Properties:
 
Cat Whisker - enhance spellwork, divination and psychic abilities, protection, clarity
 
Clear Quartz - amplify intentions, ward off negativity
 
Note: The container should be opened by pulling on the cork stopper rather than the crystals.