Skip to product information

PHOTOS ARE OF ACTUAL PRODUCT FOR SALE

1 of 3

Black onyx

Black onyx

Regular price $5.00 USD
Regular price $7.00 USD Sale price $5.00 USD
28% OFF Sold out
Tax included. Shipping calculated at checkout.
×

Shipping Policy

Flat 5 usd shipping worldwide (add unlimited stones). We now offer DDP(Duty Paid) shipping to the USA. Ensuring zero extra tariffs. NO surprise charges on delivery. 

Processing Time:

All orders are processed within 1-3 business days approx. Orders are not shipped or delivered on weekends or holidays. If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in the shipment of your order, we will contact you via email.

Shipping Rates & Delivery Estimates:

Shipping charges for your order will be calculated and displayed at checkout. Delivery times vary based on the shipping method chosen and the destination.

Standard Shipping: 10 to 14 business days approx (postals, xpressbees)
Express Shipping: 5 to 9 business days approx 
Please note that delivery delays can occasionally occur, especially during peak seasons.

PRICE is flat 5 USD for regular shipping (add as many stones as you want in the order)
PRICE is flat 25 USD (express)

Regular Shipping ( 10 to 14 working days approx, Fully Trackable)
Tracking number provided

Express Shipping ( 5 to 9 working days approx., Fully Trackable) Tracking number provided

Shipment Confirmation & Order Tracking:

You will receive a Shipment Confirmation email once your order has shipped, containing your tracking number(s). The tracking number will be active within 24 hours.

Customs, Duties, and Taxes:

Cabochons4sale is not responsible for any customs and taxes applied to your order. All fees imposed during or after shipping are the responsibility of the customer (tariffs, taxes, etc.).

International Shipping Policy:

We currently ship to most of the countries. If your country is not listed at checkout, please contact us to discuss possible shipping options

SPECIFICATIONS

  • Product ID

    C4SW241

  • Weight

    1 gm

  • Size

  • Shape

    Oval

  • Color

    Black

  • Clarity

    Opaque

Size & Weight

  • All gemstones are measured in millimeters (mm).
  • Dimensions are listed as length × width × depth, except for round stones which are measured as diameter × depth.
  • Always choose gemstones by size, not by weight!
  • Different gem varieties have different densities, so carat weight isn’t a reliable indicator of size.
  • Note: 1 ct = 0.2 g
1 cent coin size reference
1 cent
19.05 mm
5 cent coin size reference
5 cent
21.21 mm
10 cent coin size reference
10 cent
17.91 mm
25 cent coin size reference
25 cent
24.26 mm
50 cent coin size reference
50 cent
30.61 mm
1 dollar coin size reference
1 dollar
26.50 mm
Gemstones Treatments Explained
Treatment Description
Natural This gemstone has zero treatments—no heat, no irradiation, no filling, no stabilisation. It’s simply mined, cut, and polished.
Heated Heating enhances or develops colour and clarity, commonly seen in Sapphire, Ruby, Tanzanite, Topaz, and Zircon.
Dyed This process adds colouring agents to create a richer, more even colour. Traditionally associated with Agate and still used today for certain Onyx and Agate stones.
Irradiated Radiation treatment modifies light absorption, transforming clear stones like Topaz into blue varieties.
Coated A thin metallic film is added to produce the iridescent look found in Mystic or Azotic quartz.
Smoked Foil-wrapping and gentle heating allow smoke to enter the opal, darkening its body colour and boosting play-of-colour. Common in some Ethiopian Black Opals.
Stabilised Resin or polymer is infused into porous gems to improve hardness, density, and colour—essential for fragile stones like Turquoise.
Cultured Human-assisted pearls grown in freshwater or saltwater molluscs. They grow faster and are more reliable, which keeps them affordable.
View full details

0% Tariff

Zero Tariffs, & Zero Surprises.

Free Drilling

Free Drilling, No Extra Cost. Click to see chart.

Stone Same As Picture

What You See Is Exactly What You Get.

True Details

Real Stones. Real Trust.

Worldwide Shipping

Fast Shipping with Tracking

Customer Support

Email / Instagram

×

This is a Black onyx. The product is a natural Oval Opaque. Black onyx in Black color with the approx size of 14*10*5mm. Clarity of This Black onyx Piece is Opaque. The Product is sold as pictured: 1pc Oval All cuts Black onyx for the Price Listed. 

  • What is the typical appearance of Black Onyx gemstones?
    Black Onyx is generally recognized for its rich dark appearance and smooth polished surface. Depending on the material and treatment, subtle variations in tone or pattern may occur.
  • Is Black Onyx a good gemstone for everyday jewelry?
    Its good hardness makes Black Onyx suitable for many everyday jewelry designs. However, pieces worn frequently should still be protected from strong impacts, scratches, and harsh chemicals.
  • Can Black Onyx be used for gemstone carving?
    Yes, Black Onyx is suitable for carving and can be shaped into cameos, ornamental designs, figurines, symbols, and other decorative gemstone pieces.
  • Does Black Onyx have an opaque appearance?
    Most commercially available Black Onyx used for jewelry has an opaque appearance, allowing its deep black color to remain the dominant visual feature.
  • What metals pair best with Black Onyx?
    Black Onyx works beautifully with sterling silver, yellow gold, white gold, rose gold, and platinum. The dark gemstone provides an attractive contrast against both bright and warm-colored metals.
  • Is Black Onyx suitable for custom-cut gemstones?
    Yes, Black Onyx can be cut into different proportions and shapes according to a jewelry designer's requirements. Custom cutting can help match the gemstone to a specific setting or design.
  • How do I compare Black Onyx gemstones when shopping online?
    Compare measurements, shape, polish, color appearance, surface quality, and photographs under good lighting. Buying from an experienced supplier such as Cabochons4sale can also help when selecting material for jewelry projects.
  • Can I buy Black Onyx cabochons in multiple sizes?
    Yes, Black Onyx cabochons can be produced in a variety of sizes for rings, pendants, bracelets, and larger statement pieces. Cabochons4sale offers gemstone options suitable for different jewelry-making requirements.
  • Is Black Onyx suitable for wholesale jewelry production?
    Yes, its versatile color and availability in different shapes and sizes make Black Onyx useful for both individual jewelry projects and larger production requirements.
  • What should jewelry makers look for in a premium Black Onyx gemstone?
    Look for an attractive deep color, well-finished surface, accurate cutting, clean edges, suitable thickness, and good overall polish. Consistent quality is particularly important when ordering multiple stones for a jewelry collection.

Flat 5 usd shipping worldwide (add unlimited stones). We now offer DDP(Duty Paid) shipping to the USA. Ensuring zero extra tariffs. NO surprise charges on delivery. 

Processing Time:

All orders are processed within 1-3 business days approx. Orders are not shipped or delivered on weekends or holidays. If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in the shipment of your order, we will contact you via email.

Shipping Rates & Delivery Estimates:

Shipping charges for your order will be calculated and displayed at checkout. Delivery times vary based on the shipping method chosen and the destination.

Standard Shipping: 10 to 14 business days approx (postals, xpressbees)
Express Shipping: 5 to 9 business days approx 
Please note that delivery delays can occasionally occur, especially during peak seasons.

PRICE is flat 5 USD for regular shipping (add as many stones as you want in the order)
PRICE is flat 25 USD (express)

Regular Shipping ( 10 to 14 working days approx, Fully Trackable)
Tracking number provided

Express Shipping ( 5 to 9 working days approx., Fully Trackable) Tracking number provided

Shipment Confirmation & Order Tracking:

You will receive a Shipment Confirmation email once your order has shipped, containing your tracking number(s). The tracking number will be active within 24 hours.

Customs, Duties, and Taxes:

Cabochons4sale is not responsible for any customs and taxes applied to your order. All fees imposed during or after shipping are the responsibility of the customer (tariffs, taxes, etc.).

International Shipping Policy:

We currently ship to most of the countries. If your country is not listed at checkout, please contact us to discuss possible shipping options

Gemstones are naturally occurring minerals prized for their beauty, color, and rarity. They are used in jewelry, decorations, and sometimes for spiritual purposes.
A cabochon is smooth and polished, usually dome-shaped, without any cuts. A faceted gemstone has multiple small angled cuts that reflect light and create sparkle.
Authenticity can be checked through certified labs, hardness tests, refractive index, or sometimes using UV light or a microscope. Buying from certified sellers is the safest way.
Some people believe gemstones carry spiritual or healing energies. For example, amethyst is thought to bring peace and clarity, while rose quartz is linked to love and harmony.
× Zoomed Image
Jewelry and gemstone sketch

OVER 26 YEARS IN BUSINESS

THE EXCELLENCE IS IN OUR CUTTING

From timeless cabochons to brilliant cuts, we’ve dedicated decades to mastering the art of gemstone craftsmanship — guided by integrity, precision, and a deep love for the natural world.

Recently viewed