This is for making impressions on sealing wax in the form of a pentagram, an ancient symbol with many different historical associations (http://en.wikipedia.org/wiki/Pentagram) and commonly linked in modern context with Wicca or Witchcraft. Also available as a traditional seal.
Caution: remove signet rings from your hand before using to make an impression. The ring will get hot. Please be careful to avoid burns when using fire or hot wax.