Like the Apron of White is to Blue Lodge, a black fez with the Mokanna symbol and a dangley red tassel is to the Grotto. Once you become a prophet in any Grotto, you’re given a fez of your own. Righteously, you can spruce up or “bling” your fez (by adding Masonic/Grotto pins or Enchanted Lanterns). If given the opportunity to become Monarch, you get a new fez with a purple tassel – the mark of a Monarch or Past Monarch.
If you can avoid it, don’t forget to bring your fez to a Grotto meeting or social event. To make a long story short, whether you’re a Shriner or a Prophet, fezzes rule.
This picture was found on a very cool Masonic website, “The Virtual Museum of Fezology”