Black Fire Opal Round Cabochon - The Opal Dealer
Black Fire Opal Round Cabochon - The Opal Dealer
Black Fire Opal Round Cabochon - The Opal Dealer
Black Fire Opal Round Cabochon - The Opal Dealer
Black Fire Opal Round Cabochon - The Opal Dealer
Black Fire Opal Round Cabochon - The Opal Dealer
Black Fire Opal Round Cabochon - The Opal Dealer
Black Fire Opal Round Cabochon - The Opal Dealer
Black Fire Opal Round Cabochon - The Opal Dealer
Black Fire Opal Round Cabochon - The Opal Dealer

Black Fire Opal Round Cabochon

Stone Size: 2mm

Stone Size: 2mm
2mm
3mm
4mm
5mm
6mm
7mm
8mm

Quantity: 1 Piece

Quantity: 1 Piece
1 Piece
5 Pieces
10 Pieces
25 Pieces
50 Pieces

Guaranteed safe checkout

amazon paymentsamerican expressapple paybitcoingoogle payjcbmasterpaypalshopify paysofortvisa

WHAT TO EXPECT WHEN SHOPPING AT THE OPAL DEALER

Description

Unleash the power of a roaring fire with our bestselling Black Fire Opal Cabochons. This iconic lab-created opal features a deep black base that smolders with intense flashes of red, orange, and green fire. Their perfectly calibrated round shape and flat back make them ideal for precise setting and inlay work. As our most popular choice for jewelry making supplies, these synthetic opal cabochons bring an unmatched energy and burning passion to your most important projects, from bold ring settings to fiery stud earrings.


Product Specifications

Material Lab-Grown Opal (80% Silica, 20% Polymer)
Color Play Primary: Deep Black | Fire: Rainbow (Red, Orange, Green)
Shape Round Cabochon
Back Flat Back
Sizes 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm 
Quantity Sold by the Individual Cabochon
Hardness 4 on the Mohs scale
Heat Resistance Up to 250°F / 120°C

Sizing & Thickness

  • 2mm Cabochon: 1.0mm Thick
  • 3mm Cabochon: 1.5mm Thick
  • 4mm Cabochon: 1.8mm Thick
  • 5mm Cabochon: 2.0mm Thick
  • 6mm Cabochon: 2.2mm Thick
  • 7mm Cabochon: 2.4mm Thick
  • 8mm Cabochon: 2.6mm Thick

Why Choose Our Opal Cabochons?

  • Intense Fire & Color: Meticulously grown to display a fiery and brilliant spectrum of color flashes against a smoldering dark base.
  • Perfectly Calibrated: Each cabochon is cut to precise millimeter dimensions with a flat back, ensuring a perfect fit for bezels, settings, and inlay channels.
  • Unmatched Stability: Guaranteed not to crack, craze, or yellow over time, offering superior durability over natural opal.
  • Easy to Set & Polish: The smooth, domed top polishes to a high shine, and the flat back provides maximum surface area for adhesives, making them ideal for jewelry of all kinds.

Creative Applications

  • Jewelry Setting: The top choice for creating passionate, eye-catching jewelry. Set them in bezels for bold rings, smoldering pendants, and statement earrings.
  • Nail Art & Adornment: Add a fiery, gem-like accent to create dramatic and high-end nail art designs.
  • Surface Inlay: Ideal for inlaying into woodworking and other crafts to create a dramatic 'lava flow' or galaxy effect.
  • Wire Wrapping: Use as a powerful centerpiece for wire-wrapped designs that demand attention.

Please Note: Our lab-created opals can withstand heat up to approximately 250°F. For best results and to maintain the integrity of your cabochons, please avoid exposing them to high heat. Due to their unique composition, every cabochon is unique and color may vary.

Why Choose Lab-Grown Opal Over Natural Opal?

Lab-grown opal represents the perfect marriage of nature’s beauty and human ingenuity. It captures the mesmerizing fire of the world’s rarest opals while delivering significant advantages in durability, ethics, and vibrancy. Here’s why choosing a lab-grown opal for your jewelry is a brilliant decision.


Engineered for Everyday Life

The most significant advantage of lab-grown opal is its superior strength and stability. Natural opal is famously delicate, containing a high water content that makes it prone to cracking and "crazing" from impacts or temperature changes. This fragility is why it's often avoided for daily-wear pieces like engagement rings.

Our lab-grown opals solve this problem. By creating the opal in a controlled environment, a gem is produced that is far more resilient and durable. You can wear your opal jewelry with confidence every day, without the constant worry of damaging your precious stone.

Unmatched Vibrancy & Fire

While natural opals can be stunning, their quality and play-of-color can be inconsistent. The beauty of a lab-grown opal is the remarkable consistency and vibrancy of its fire. The process cultivates a flawless, intricate structure that results in a breathtaking and uniform play-of-color, a feature typically found only in the most expensive mined opals.

An Ethical & Sustainable Sparkle

Choosing a lab-grown opal is a choice you can feel good about. Our opals are grown above ground, completely bypassing the environmental disruption and ethical concerns associated with traditional mining. There is no destructive land use, no murky supply chains, just pure, beautiful opal created with a clear conscience.

Accessible Luxury

We offer these incredible gemstones at a more accessible price point than their mined counterparts of similar quality. Lab-grown opals make the breathtaking beauty of this unique gem available to more people and for more types of jewelry, allowing you to own a piece of rare beauty without the rare price tag.


With lab-grown opal, you no longer have to choose between breathtaking beauty and practical durability. You get the fire of a rare gemstone with the resilience for everyday life. A modern, ethical, and accessible treasure designed to last a lifetime.

How Our Lab-Grown Opal is Made

Our lab-grown opal, also known as synthetic opal or man-made opal, is a marvel of science, capturing the dazzling beauty of natural opal in a controlled environment. The result is a gemstone material with spectacular, consistent color and fire. While created in a lab, it shares the same fundamental composition as its natural counterpart: silica.

Lab-grown opal provides a brilliant and ethical alternative to mined opal. It offers not only affordability but also enhanced durability for creative projects. Unlike natural opal, which can be prone to cracking or crazing, our opal is stabilized with a polymer. This special impregnation process makes the material much stronger and easier to work with, perfect for jewelry, ring making, and other crafts. Please note, because of this polymer stabilization, the material cannot be exposed to the high heat of activities like glassblowing.

The Creation Process

Growing opal is a slow and precise art that mimics nature's own method, refined by science. The entire process, from start to finish, can take over a year to complete.

Step 1: Forming the Foundation

The journey begins with a solution of microscopic silica spheres suspended in water. This solution is the basic building block of opal. Nothing can be rushed here; the silica must be allowed to settle naturally.

Step 2: The Long Wait for Color

Over several months, these tiny silica spheres gradually sink and stack themselves into a highly ordered, tightly packed lattice. It is this perfectly uniform structure that gives opal its unique magic. As light passes through, the structure acts like a prism, diffracting the light and splitting it into a vibrant, dancing spectrum of color. This phenomenon is known as "play-of-color."

Step 3: Stabilization and Hardening

Once the silica structure is perfectly formed, the water is slowly and carefully removed. The material is then infused with a polymer to add strength and stability. This crucial step enhances the opal's durability, making it resistant to impact and cracking. The block is then allowed to fully harden into a solid mass.

Step 4: Revealing the Beauty

The rough block of lab-grown opal is now ready to be transformed. Just like a natural gemstone, it is skillfully cut, shaped, and polished to reveal the breathtaking patterns and colors locked inside. This process results in a stunning material ready for endless creative applications.

Shipping & Processing

Processing Times & Shipping Offers: 

  • Processing Times: 1-3 Business Days *Unless otherwise specified
  • US orders over $50 are eligible for Free Ground Shipping via USPS (estimated 3-5 business days) 
Reviews

Customer Reviews

Based on 2 reviews
100%
(2)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
R
Randy Hays
Nice opals

Well cut opals shipped promptly

N
Nathan Gardner
Wow!

These are wonderful! I milled a flat bottom shallow hole in a ring channel to hold it. Then paired it with "Black Fire" and it's great! Lots of fire & color.

Inspiration From Our Featured Creators

How to Make a Crushed Opal Ring - The Opal Dealer
Ring making is more than just a hobby – it's a true passion. Meet a skilled maker who takes craftsmanship to new he...