In the Manga, the key is depicted to be an ordinary golden key with the crest of the Maiden, a symbol reminiscent to the letters M and J combined together, stamped on its bow. In the Anime, the key is still depicted as gold but is designed more intricately. Similar to the other keys, the center of the bow is white, stamped with the crest of the Maiden, colored in purple. Surrounding the heart-shaped center on either side are simple curves, spiraling on the top and bottom. The blade's end is shaped like a heart.
While in possession of the key, a Celestial Spirit Mage may be able to summon the Maiden Virgo by reciting the quote, "Open the Gate of the Maiden! Virgo!". This summons Virgo, a woman dressed as a maid, capable of using Earth Magic to attack opponents, or dig holes.