Geological Profile
Mineral Group: Quartz (Chalcedony – microcrystalline)
Chemical Formula: SiO₂ (Silicon Dioxide)
Crystal System: Trigonal
Hardness: 6.5 – 7 (Mohs Scale)
Transparency: Translucent to opaque
Colour: Most commonly black, but also found in banded forms with white, brown, tan, and honey hues
Common Sources:
True Onyx is found in Mexico, Brazil, India, Pakistan, Madagascar, and the USA. Much of what is sold commercially as "Onyx" (especially in carvings or home décor) is actually banded Calcite — particularly Yellow or Brown "Onyx" — and not a form of Quartz at all.
Formation:
Onyx is a variety of Chalcedony, distinguished by its parallel banding (as opposed to the curved or chaotic banding in Agate). It forms when silica-rich waters deposit alternating layers of light and dark minerals in cavities of volcanic or sedimentary rock.
Important Note:
Many decorative items labeled as "Green Onyx" or "Yellow Onyx" are actually Calcite or Travertine, not Chalcedony-based Onyx. These stones are beautiful and metaphysically useful, but should be accurately represented in listings.
Metaphysical Insight
Onyx is a stone of inner strength, grounding, and focused protection. It is believed to help quiet mental chatter, release old trauma, and provide emotional stability during times of stress or transformation. Often associated with self-mastery, it supports those navigating grief, challenge, or deep personal growth.
Energy Associations
-
Chakras: Root
-
Zodiac Signs: Leo, Capricorn
-
Element: Earth
-
Planetary Influence: Saturn
Emotional & Spiritual Benefits
-
Grounds scattered energy and strengthens focus
-
Aids in releasing past wounds or grief
-
Promotes emotional endurance and inner fortitude
-
Shields against negativity and draining influences
-
Encourages self-discipline and clarity under pressure
Affirmation:
"I am grounded, clear, and resilient. I move forward with strength and purpose."
Varieties & Common Mislabels
True Onyx (Black or Banded Chalcedony):
Quartz-based Chalcedony with tight, parallel black and white banding. Used for jewellery, palm stones, and protective talismans.
Banded Onyx (often called “Onyx Marble” or “Travertine Onyx”):
This commercial version of “Onyx” is commonly used in carvings, bowls, tiles, and spheres. It is often labelled as Yellow Onyx, Green Onyx, or Honey Onyx, but is not actually Quartz — it's typically a form of banded Calcite or Travertine.
-
Geological Identity: Composed of Calcium Carbonate (Calcite), formed in sedimentary environments like caves or hot springs
-
Appearance: Creams, browns, greens, oranges, and honey tones in layered banding
-
Metaphysical Notes: Gentle grounding, home harmony, and emotional balance
-
Chakras: Root, Solar Plexus
-
Element: Earth
-
Energy Style: Soft and stabilising
Dyed Onyx (Black):
Much of the black Onyx used in beads or jewellery is actually Agate that has been dyed. While still quartz-based, it’s not naturally black — though it carries similar metaphysical energy.
Disclaimer
Crystals are a natural form from the earth. The item you receive may be different from the exact image you see. Crystals have their own imperfections, shapes and colours and no two are identical. All crystal properties are metaphysical in nature and they can be used alongside but not replace medical advice.