Mercury governs intelligence and therefore rules such fields as education, literature, communication, and public speaking. It is associated with the earth element, cold energy, the color green, agriculture, travel, and the nervous system. Endowed with youthful, fast-moving energy, Mercury appears prominently in the horoscopes of people who are playful, enthusiastic, and talkative. Mercury also governs astrologers, clerks, accounts, sculptors, and any other profession requiring skillful use of the hands. Mercury enhances the ability to learn languages, improves memory, and facilitates the power of speech. People with a strong Mercury generally have the ability to perform activities quickly and handle several matters simultaneously.
If Mercury is exalted one will be educated, happy, fortunate and highly respected. But if Mercury occupies a weak or harmful position in one's horoscope, one becomes prone to speech and hearing impediments, deceptive behavior, and lack of vitality. GREEN is the cosmic color transmitted by emeralds and other green gems. Green color waves relate to the earth element and are cold by nature. This color, being heavy, influences the heavy organs of the body such as the flesh, liver, kidneys and intestines. Mercury astral talismans are also known to enhance psychic powers, improve memory and learning, strengthen the nervous system, and provide protection against snakes and envious people.
Gemstones governed by Mercury include emerald, peridot, tsavorite, chrome tourmaline, chrome diopside, green jade and other natural green gems of flawless (eye-clean) quality.