Gemini Birthstones Explained: Benefits and Zodiac Pairings If you've landed on this page, you are probably wondering what it's like to be a Gemini person and what associated Gemini Birthstones are. So, without further ado, let's start our journey together. Have you ever thought what you, Angelina Jolie, Nicole Kidman, Heidi Klum, Chris Evans, Morgan Freeman, and Zoe Saldaña in common? Let us answer, you all guys share the same zodiac sign, ie. Gemini, and are born between May 21 and June 21.