Planetary symbol: ☿
Astrological signs: ♊ (Gemini) and traditionally ♍ (Virgo)
Mercury is the closest planet to the Sun, has the shortest orbit (88 Earth days) and is the smallest planet in the Solar System. Like the Earth, it is a rocky planet and has a magnetosphere. Mercury is visible with the naked eye from Earth (although only briefly because of its solar proximity), and the earliest recorded observations of it date back to Assyrian astronomers in the 14th century bce.
In Greco-Roman mythology, Mercury (Greek name: Hermes), is the messenger god. Astrologically, Mercury represents the faculties of the brain, adaptability and communicability; people with erratic behavior or moods are also said to be mercurial in nature. Mercury is associated with Wednesday.
This pendant design is based on images from NASA's Mariner 10 mission in the 1970s; modifications may be made after more images are collected from the Messenger probe's second fly-by of Mercury in 2009 (the first was in 2008).