In Norse mythology, Yggdrasil connects nine worlds: Asgard, Vanaheim, Alfenheim, Midgard, Jötunheim, Muspelheim, Schwarzalbenheim, Niflheim, and Helheim. To care for beard jewelry made of 925 sterling silver, it is recommended to polish it regularly with a special silver polishing cloth or to use a mild soapy solution for cleaning. To prevent tarnishing, the jewelry should be stored in a dry place and protected from contact with harsh chemicals or moisture.