Gemini Crystals
Crystals and birthstones traditionally associated with Gemini (May 21 – Jun 20): Agate, Citrine, Tiger's Eye. These associations are folklore, not science — but the stones themselves are real, and here’s how to recognise each one.
Gemini birthstone
The stone most often named as the Gemini birthstone is Agate — a brown stone of Mohs 6.5. Gemini is also linked to Citrine, Tiger's Eye. Birthstone-by-sign lists are traditional rather than official, so they vary between sources — pick the one that speaks to you. Each stone below has photos and the physical traits that identify it.
Frequently asked questions
What is the birthstone for Gemini?
The Gemini birthstone is most often given as Agate, with Citrine, Tiger's Eye also traditionally associated with the sign. Gemini covers May 21 – Jun 20.