Cancer Crystals
Crystals and birthstones traditionally associated with Cancer (Jun 21 – Jul 22): Moonstone, Pearl, Ruby. These associations are folklore, not science — but the stones themselves are real, and here’s how to recognise each one.
Cancer birthstone
The stone most often named as the Cancer birthstone is Moonstone — a white stone of Mohs 6. Cancer is also linked to Pearl, Ruby. 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 Cancer?
The Cancer birthstone is most often given as Moonstone, with Pearl, Ruby also traditionally associated with the sign. Cancer covers Jun 21 – Jul 22.