The “M” symbol is seen as a Maiden symbol in some cultures and as a sheaf of wheat or grain in others. Each nature and time period related to the constellations in their own way based on items that were popular in their culture. There is also the idea that the sheaf pointing inward represents the location of the female reproductive organs just like Scorpios points outward.
Mercury’s Symbol means “mind over matter.” The horns or moon crescent represents the winged helmet and intuitive strengths of Mercury over the circle of divin spirit and the cross of matter. Mercury Rules Gemini and Virgo. Gemini tends to have more “intuitive” intelligence, while Virgo tends to have more systematic or organizational intelligence.
There are countless myths involving the zodiac sign of Virgo. Virgo has so many different personas: Astraea, Andromeda, Demeter, Ceres, Ma’at, Justitia, Dike, Ishtar, and Isis. The Virgo Constellation is the largest constellation on the path of the sun known by astrologers as the ecliptic. Virgo is also the virgin mother goddess associated with the Virgin Mary or La Virgen de Guadalupe. Virgo is seen as the moral compass of the zodiac measuring justice using her scales. Once man became too greedy, violent and destructive, she ascended back to the stars leaving mankind with a 40º constellation called Virgo and a 30º degree constellation called Libra to remind the human race to use temperance in its affairs.