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Onyx Gemstone Beads

Black Onyx is highly esteemed in the world of gemology for its rich, deep color and fine crystalline structure. Scientifically, Onyx is a variety of the silicate mineral chalcedony, formed by the deposition of silica at low temperatures in gas cavities in lava. This results in its unique bands of color, which can range from white to almost every other shade, often layered in striking, contrasting patterns.

Facts: Black Onyx has been used since antiquity, cherished not only for its beauty but also for its purported protective properties. The Romans, in particular, crafted seals, amulets, and rings from Onyx. It was also popular amongst the Greek and Egyptian civilizations for stone carvings and cameos, where its layered colors were ideal for creating images with depth and contrast.

Metaphysical / Holistic: Black Onyx is believed to bring strength, endurance, and perseverance to those who wear or carry it. It is also thought to help individuals face their fears and build self-confidence.

Onyx 8mm Round Large Hole 8-Inch

Original price $12.00 - Original price $12.00
Original price $12.00
$12.00 - $12.00
Current price $12.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all-black stone, and much of the black Onyx o...

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Original price $12.00 - Original price $12.00
Original price $12.00
$12.00 - $12.00
Current price $12.00
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Onyx 8mm Round 8-Inch

Original price $8.00 - Original price $8.00
Original price $8.00
$8.00 - $8.00
Current price $8.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all-black stone, and much of the black Onyx o...

View full details
Original price $8.00 - Original price $8.00
Original price $8.00
$8.00 - $8.00
Current price $8.00
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MATTE Onyx 8mm Round Large Hole 8-Inch

Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all-black stone, and much of the black Onyx o...

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Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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MATTE Onyx 8mm Faceted Rondelle 8-Inch

Original price $15.00 - Original price $15.00
Original price $15.00
$15.00 - $15.00
Current price $15.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all-black stone, and much of the black Onyx o...

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Original price $15.00 - Original price $15.00
Original price $15.00
$15.00 - $15.00
Current price $15.00
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Onyx 8mm Star Cut Round 15-16 Inch

Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all-black stone, and much of the black Onyx o...

View full details
Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
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Onyx 8mm Faceted Rondelle 8-Inch

Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all-black stone, and much of the black Onyx o...

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Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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Onyx 8mm Round Faceted 8-Inch

Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all-black stone, and much of the black Onyx o...

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Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
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Onyx 8mm Rainbow Plated Rondelle Faceted - 15-16 Inch - CLEARANCE

Original price $21.00 - Original price $21.00
Original price $21.00
$21.00 - $21.00
Current price $21.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all to black stone, and much of the black Ony...

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Original price $21.00 - Original price $21.00
Original price $21.00
$21.00 - $21.00
Current price $21.00
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Onyx 8mm Faceted Bicone - 15-16 Inch

Original price $16.00 - Original price $16.00
Original price $16.00
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Current price $16.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all to black stone, and much of the black Ony...

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Original price $16.00 - Original price $16.00
Original price $16.00
$16.00 - $16.00
Current price $16.00
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Onyx 8mm Faceted Rondelle Large Hole 8-Inch

Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
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Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all-black stone, and much of the black Onyx o...

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Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
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FAQ

Are Emeralds natural or lab created?

Most Emeralds are natural beryl. Due to Emerald’s internal inclusions, treatments such as oiling or resin filling are very common and expected.

How durable are Emerald beads?

Emerald ranks 7.5–8 on the Mohs scale, making it very durable and great for earrings and necklaces. Care is recommended for bracelets and rings.

What are notable characteristics about Emerald's appearance?

Emeralds naturally form with internal fractures and inclusions known as jardin. Also, Emerald displays a phenomenon called pleochroism, meaning its color can change depending on what angle you look at it from.

Can Emerald beads be faceted?

They can be faceted, but many emerald beads are cut smooth or lightly faceted to reduce stress on the stone and prevent chipping.

How do you take care of Emerald gemstones?

Avoid ultrasonic and steam cleaners. Use mild soap, water, and a soft cloth. Emerald treatments can be damaged by heat and chemicals.

Where is Emerald commonly found?

Common sources include Colombia, Zambia, Brazil, and Ethiopia, each producing different green tones and clarity characteristics.

Are all Dakota Stones gemstone beads genuine?

Yes, all of our gemstone beads are made from authentic, natural materials. Any treatments (such as stabilization or dyeing) are clearly noted.

Are gemstone beads durable for everyday jewelry?

Most stones are durable, but hardness varies. Softer stones (below 6 on the Mohs scale) are best for necklaces or earrings rather than rings or bracelets.

How are Dakota Stones ethically sourced?

We work directly with trusted suppliers around the world to ensure responsible mining, fair labor, and environmentally conscious sourcing.