Collection: Black Onyx

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About Black Onyx

Black Onyx is the solid black form of onyx, a chalcedony in the quartz family, and the one most people picture when they hear the name. It has been worn for centuries as a stone of strength, self-mastery and composure. Nearly all of it is chalcedony treated to a deep, even black, a long-accepted practice that we state plainly rather than hide.

Key traits

Builds inner strengthSteadies under pressureQuiets overwhelming worrySupports wise decisionsGuards personal energy

Chakra

🪨1Root

Zodiac

♌Leo
♑Capricorn

Element

🌍Earth

Good to know

Also known as OnyxCare Nearly all Black Onyx is chalcedony treated to an even black. The color is stable in normal wear, but avoid long soaking, harsh chemicals, and ultrasonic or steam cleaning. Not for elixirs or ingestion.

Learn more

Meaning, properties, history and care, in full. Updated October 12, 2026

Read the Black Onyx crystal guide →