The sign of the zodiac for people born in May and June is Gemini. In particular, Gemini Birthstones are those who were born between May 21 and June 21. After Taurus, Gemini is the third sign of the zodiac. The twins are the emblem of Gemini and the element of air. Being around Geminis is usually a complete pleasure because they may be witty, kind, gentle, and laid back. However, if you catch them off guard or in the incorrect frame of mind, they may come across as unsure, erratic, and untrustworthy.