Capricorn Crystals
Crystals and birthstones traditionally associated with Capricorn (Dec 22 – Jan 19): Garnet, Onyx, Smoky Quartz. These associations are folklore, not science — but the stones themselves are real, and here’s how to recognise each one.
Capricorn birthstone
The stone most often named as the Capricorn birthstone is Garnet — a red stone of Mohs 6.5. Capricorn is also linked to Onyx, Smoky Quartz. 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 Capricorn?
The Capricorn birthstone is most often given as Garnet, with Onyx, Smoky Quartz also traditionally associated with the sign. Capricorn covers Dec 22 – Jan 19.