Natural Black Onyx Gemstone Cabochon | Deep Black Loose Stone for Jewelry Making | Bold Minimalist Gemstone

Make your jewelry designs stand out with the clean, dramatic look of Natural Black Onyx. Its deep black appearance and smooth polished surface create a timeless aesthetic that works beautifully with both minimalist and statement jewelry. Black Onyx is a versatile choice for designers who want a strong, sophisticated gemstone that pairs effortlessly with different metals and design styles.

Every stone has its own natural characteristics and subtle variations, giving your finished creation an individual touch. Whether you're creating a classic ring or a modern statement pendant, Black Onyx provides a striking foundation for creative jewelry work.

Perfect for Jewelry Making

• Statement Rings
• Men's & Women's Rings
• Pendants
• Earrings
• Bracelets
• Necklaces
• Wire-Wrapped Jewelry
• Handmade Jewelry
• Custom Designs
• Artisan Jewelry Collections

Expertly Crafted in Our Own Manufacturing Unit

Our Black Onyx gemstones are cut and polished in our own manufacturing unit by experienced gemstone artisans. We carefully work through shaping, smoothing, and polishing to achieve a refined finish while maintaining the stone's natural character.

Each gemstone passes through our quality-control process before being packed for delivery.

✓ Carefully selected Black Onyx material
✓ Rich and elegant black appearance
✓ Professionally shaped and polished in-house
✓ Smooth, refined surface finish
✓ Tested through an authentic gemological laboratory
✓ Checked by our dedicated quality-control team
✓ Individually inspected before dispatch
✓ Multiple size and shape options available

20+ Years of Gemstone Craftsmanship

Our team combines expert gemologists and skilled artisans with more than 20 years of experience in gemstone cutting and finishing. Their expertise allows us to maintain attention to detail throughout the entire process — from material selection to final polishing.

We focus on providing not only attractive gemstones, but also consistent craftsmanship, dependable quality, and top-notch service.

Why Black Onyx?

Black Onyx is especially popular for its bold, neutral appearance. Its dark surface can create a beautiful contrast against gold, silver, and other metals, making it suitable for contemporary, classic, masculine, and unisex jewelry designs.

Simple Shipping Advantage

Only $5 delivery — add as many gemstones as you want to your order with no extra shipping charge for additional stones.

• Secure protective packaging
• Smooth worldwide delivery
• Careful gemstone handling
• Quality inspection before dispatch
• Professional customer support
• Multiple stones can be shipped together

Whether you're a jewelry designer, handmade artist, collector, or creating a custom piece for yourself, our Black Onyx gemstones offer a versatile combination of bold color, polished elegance, and timeless style.

• What is Black Onyx gemstone?
  Black Onyx is a striking variety of chalcedony known for its deep black appearance, smooth texture, and elegant polished finish. It is widely used in jewelry, carvings, and decorative gemstone designs.
• What makes Black Onyx popular for jewelry making?
  Its dark, sophisticated color provides a strong contrast with metals and other gemstones. Black Onyx works beautifully in rings, pendants, bracelets, earrings, and statement jewelry.
• Is Black Onyx naturally black?
  Black Onyx available in the gemstone market is commonly enhanced to achieve a consistent deep-black color. Natural chalcedony can occur in dark shades, but uniform black material is often treated.
• What shapes can Black Onyx gemstones be cut into?
  Black Onyx can be shaped into ovals, rounds, cushions, pears, squares, rectangles, freeforms, and custom shapes. Its versatility makes it suitable for both classic and contemporary jewelry designs.
• Can Black Onyx be used as a cabochon?
  Yes, Black Onyx is particularly well suited to cabochon cutting. Its smooth surface and rich color create a clean, refined appearance that works well for jewelry settings.
• How should Black Onyx gemstones be cared for?
  Clean Black Onyx gently with a soft cloth and mild soapy water. Avoid harsh chemicals, ultrasonic cleaners, and sudden temperature changes to help preserve its polished surface.
• Where can I buy Black Onyx gemstones online?
  You can explore Black Onyx gemstones online at Cabochons4sale, a trusted manufacturer and supplier offering gemstone options for jewelry designers, collectors, and wholesale buyers.
• How can I find quality Black Onyx for jewelry projects online?
  Look for consistent color, smooth polishing, accurate measurements, and clearly presented gemstone photographs. Cabochons4sale offers Black Onyx suitable for designers looking for professionally cut gemstone pieces.
• Can Black Onyx be customized for jewelry designs?
  Yes, Black Onyx can be produced in different sizes, shapes, and cutting styles to suit custom jewelry requirements. This makes it useful for both individual artisan projects and larger production orders.
• Why do jewelry designers choose Black Onyx?
  Black Onyx offers a timeless appearance that pairs easily with gold, silver, platinum, and other gemstones. Its bold yet minimal look makes it suitable for men's jewelry, women's jewelry, and modern statement pieces.

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