Onyx: the Ultimate Jewellery Guide
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With its deep black colour and smooth polish, onyx has long been a symbol of sophistication and strength. A gemstone that never goes out of fashion, onyx is a favourite for both men’s and women’s jewellery, offering bold simplicity and timeless appeal.
History & Symbolism of Onyx
The word onyx comes from the Greek for “claw” or “fingernail,” referring to its pale varieties, though today it is most associated with black. In ancient Rome, onyx was carved into cameos and seals, while in the Middle East, it was believed to protect against negative energy.
Symbolically, onyx represents willpower, protection, and grounding. It is thought to absorb negative energies and promote resilience — making it a meaningful choice for personal jewellery.
Colours & Varieties
While black onyx is the best known, other forms exist:
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Black Onyx: Sleek and classic, often dyed for uniformity.
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Banded Onyx: Featuring layers of white, brown, or red.
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Sardonyx: A reddish-brown variety with white banding (also an August birthstone).
Popular Onyx Jewellery Styles
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Onyx Signet Rings – Classic in men’s jewellery, from vintage to modern.
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Onyx Stud Earrings – Minimalist and versatile.
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Onyx Pendants & Lockets – Often paired with silver or yellow gold.
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Onyx Bead Bracelets – Popular in both bohemian and contemporary styles.
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Cameo Jewellery – Traditional designs carved into onyx.
How to Choose a Quality Onyx
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Colour: Deep, uniform black is most valued.
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Finish: A high polish enhances its sleek look.
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Craftsmanship: Onyx is often used in carving, so detail and quality of cut matter.
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Setting: Pair with silver for a modern look, or yellow gold for vintage appeal.
Caring for Onyx Jewellery
Onyx is softer than many gems (6.5–7 on the Mohs scale) and needs careful handling.
Care Tips:
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Clean with mild soap, warm water, and a soft cloth.
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Avoid ultrasonic cleaners and harsh chemicals.
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Store separately to prevent scratches.
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Remove before physical activity or exposure to strong cleaning products.
Final Thoughts
Onyx is the epitome of understated elegance — a gemstone that makes a bold statement without being loud. From classic signet rings to sleek earrings, it’s versatile, meaningful, and forever in style.
At Hallmark the Jewellers, discover our collection of onyx jewellery, blending tradition and modern design for pieces that are as strong and timeless as the stone itself.