Onyx (Chalcedony)

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[TG_INTRO]
Onyx is a popular variety of chalcedony, a microcrystalline form of quartz, admired for its smooth appearance, rich colours, and elegant natural banding. Traditional onyx commonly features parallel bands of black and white, while black onyx is especially popular in modern jewellery and gemstone accessories.

Onyx is used in bracelets, beads, rings, pendants, cabochons, and decorative carvings. Its polished surface and versatile appearance make it suitable for both traditional and contemporary designs. Depending on the material, onyx may be available in black, white, brown, and other colours, with many commercial black onyx products being dyed to achieve a consistent, deep shade.

Each piece offers a distinctive combination of colour, polish, and pattern, making Onyx a versatile choice for gemstone jewellery lovers.
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Onyx occurs in various parts of the world, with chalcedony deposits found in countries including Brazil, India, Madagascar, Uruguay, and the United States. The origin of a particular onyx product depends on the source of the rough material and the supplier.

Natural onyx forms through the deposition of silica, which creates layers or bands over time. In the gemstone trade, the name “onyx” may also be used for uniformly black chalcedony that has been dyed. Some products marketed as black onyx may have undergone colour enhancement, so treatment information should be confirmed with the seller.
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[TG_PROPERTIES]
Gemstone Name: Onyx (Chalcedony)
Mineral Family: Quartz
Mineral Structure: Microcrystalline quartz
Chemical Composition: Silicon dioxide (SiO₂)
Colour: Black, white, brown, grey, and banded combinations
Hardness: Approximately 6.5–7 on the Mohs scale
Lustre: Waxy to vitreous, depending on polish
Transparency: Usually opaque to translucent
Appearance: Smooth surface; traditional onyx often displays parallel bands
Common Cuts: Beads, cabochons, oval cuts, round cuts, and carvings
Common Uses: Bracelets, necklaces, rings, pendants, beads, and decorative objects
Treatment: Some commercial onyx, particularly black onyx, may be dyed or otherwise enhanced
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[TG_WHY_BUY]
Classic Appearance: Black Onyx offers a timeless look that suits many jewellery styles.
Versatile Colour Options: Available in dark, neutral, and banded appearances.
Smooth Polished Finish: Creates a sleek and refined look in beads and jewellery.
Suitable for Daily Accessories: Its hardness makes it suitable for many jewellery designs when handled with care.
Easy to Style: Pairs well with silver-tone, gold-tone, and other gemstone accessories.
Variety of Designs: Used in bracelets, pendants, rings, necklaces, and decorative carvings.
Distinctive Natural Patterns: Banded varieties provide visual interest and individual character.
Traditional Symbolism: In some cultural and spiritual traditions, Onyx is associated with strength, grounding, and protection; these associations are beliefs rather than scientifically established effects.
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[TG_PRICE]
The price of Onyx depends on colour consistency, banding, surface finish, size, cut, craftsmanship, and whether the material is natural, dyed, or otherwise treated. Uniform black beads, well-polished cabochons, and carefully crafted jewellery may vary in price according to quality and design.

When purchasing Onyx, ask whether the stone has been dyed or enhanced, particularly if it has a very uniform, deep black colour. Compare bead size, polish, finish, and product specifications, and check whether the item is genuine chalcedony rather than glass, plastic, or another imitation material.
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[TG_CARE]
Clean Onyx jewellery with a soft cloth and, when suitable for the specific item, lukewarm water with mild soap. Rinse gently and dry thoroughly. Avoid harsh chemicals, abrasive cleaners, sudden temperature changes, and prolonged soaking, especially if the stone is dyed or the jewellery contains delicate settings or other materials.

Do not use ultrasonic or steam cleaners unless a qualified jeweller confirms that they are suitable for the particular stone and setting. Store Onyx separately from harder gemstones and sharp objects to minimise scratches and surface damage. Remove jewellery before swimming, exercising, or using household cleaning products.
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[TG_FAQ question=”1. What is Onyx (Chalcedony)?”]
Onyx is a variety of chalcedony, which belongs to the quartz mineral family. Traditional onyx is characterised by parallel bands, often in black and white, while black onyx is widely used in modern gemstone jewellery.
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[TG_FAQ question=”2. Is Onyx a natural gemstone?”]
Yes, natural onyx occurs in nature. However, some commercial products, especially uniformly black onyx, may be dyed or treated. Ask the seller to disclose any treatments.
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[TG_FAQ question=”3. What colours does Onyx come in?”]
Onyx is commonly associated with black and white banding, but it can also appear in brown, grey, and other colour combinations. The appearance depends on the material and any treatments it has received.
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[TG_FAQ question=”4. Is Black Onyx the same as Black Agate?”]
Both belong to the chalcedony family and are closely related varieties of microcrystalline quartz. The names can sometimes overlap in commercial use. Traditional onyx is distinguished by parallel bands, while the term black agate may be used more broadly.
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[TG_FAQ question=”5. Is Onyx suitable for everyday wear?”]
Onyx has a Mohs hardness of approximately 6.5–7, making it suitable for many types of jewellery. Nevertheless, it can scratch or chip if struck against hard surfaces, so careful handling is recommended.
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[TG_FAQ question=”6. Is Black Onyx sometimes dyed?”]
Yes. Some black onyx sold commercially is dyed to create a deeper and more uniform colour. Treatment does not automatically mean a product is imitation stone, but the treatment should be disclosed accurately.
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[TG_FAQ question=”7. How can I identify genuine Onyx?”]
Appearance alone cannot always confirm whether a stone is natural chalcedony, dyed material, or an imitation. Check the seller’s product details and, for valuable purchases, seek identification from a qualified gemmologist.
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[TG_FAQ question=”8. How should I clean an Onyx bracelet?”]
Wipe it with a soft cloth and use mild soap with lukewarm water only when suitable for the piece. Avoid harsh chemicals, abrasive products, prolonged soaking, and ultrasonic or steam cleaning unless a jeweller confirms they are safe.
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