Zodiac elements include Fire, Earth, Air and Water. In the 12 Zodiacs, Gemini, Libra and Aquarius has the same astrology air sign characteristics such as very social, communicative, and intelligent. Aquarius, January 21 - February 18. Aquarius people are usually very original thinkers; they usually have very unique thoughts and ideas and have their own unique perspectives on life. . Sterling Silver. Length: 6.5 inches