Black Onyx Meaning & Properties
A deep black stone long associated with strength, self-control and steady resolve.
Black onyx has carried a meaning of quiet strength since antiquity, carved into seals and signet rings by rulers who wanted their word to hold. This guide is part of our complete guide to crystal meanings and properties, and covers what black onyx means, the energy it's traditionally associated with, and where to find it across our jewellery.
What Does Black Onyx Mean?
The black onyx meaning centres on strength, discipline and self-mastery. Ancient Romans carved it into seals and signet rings, believing it could steady the wearer's resolve and give weight to their word, a meaning that's stayed close to the stone ever since.
In more recent tradition, black onyx is understood as a stone of self-control and quiet strength, worn to hold steady during a difficult decision or a demanding period. It's this meaning that explains why black onyx remains a favourite for anyone who needs to feel grounded in their own resolve.
Black Onyx Properties & Energy
Black onyx's energy is traditionally described as grounding and strengthening, said to support discipline and steady self-control rather than protection in the more forceful sense. It's associated with the root chakra, tied to stability and a firm connection to one's own resolve.
Many people wear black onyx during a demanding period, or reach for it when a decision calls for a level head. Its meaning stays inward-facing; a stone for steadying yourself, not shielding against others.
Shop Black Onyx Jewellery
Every piece is set in sterling silver, the only metal we work in, so your black onyx jewellery is built to be worn daily and kept for years.
Black Onyx Necklaces
A deep black pendant worn close to the heart; our most reached-for way to carry black onyx's meaning every day.
Shop the Astral Black Onyx Necklace →Black Onyx Earrings
A quieter, everyday way to wear black onyx, teardrop-cut for a subtle line of movement.
Shop the Lyra Black Onyx Earrings →Prefer to hold the stone itself? Our Black Onyx Tower brings its grounding meaning into a simple, pointed form. We're building out our black onyx ring range too, so check back soon or explore the full black onyx collection for what's currently available.
Not Sure Black Onyx Is Your Stone?
Black onyx suits a grounded, self-disciplined energy, but it isn't the right fit for everyone. If you're not sure where to start, we can help you find the stone that's meant for you.
Tell us how you're feeling, or look to your birth chart, to find your stone.
Find Your Stone → Your Birth Chart →Black Onyx, Answered
What does black onyx symbolise?
Black onyx symbolises strength, discipline and self-control. Carved into seals since antiquity, it's traditionally believed to steady the wearer's resolve during difficult decisions.
Can black onyx be worn every day?
Yes. With a hardness of 7 on the Mohs scale, black onyx is durable enough for daily wear as a necklace or pair of earrings, though it's best kept away from harsh chemicals and sudden knocks.
Is black onyx a birthstone?
Black onyx isn't one of the standard modern birthstones, though it's sometimes chosen as an alternative for anyone drawn to its meaning of strength and self-control over a fixed birth month.
How do I cleanse a black onyx crystal?
Black onyx can be cleansed by resting it under moonlight overnight or passing it through incense smoke. It can also be rinsed briefly under running water, though prolonged soaking isn't recommended.