This 4.34ct natural Australian black opal was mined in Lightning Ridge New South Wales Australia. Masterfully cut into a heart cabochon measuring 11.1 mm by 11.9 mm with a rich 4.8 mm dome, this rare loose stone explodes with vivid red fire, electric green, and blue sparks over an authentic black body. It is a world class gemstone designed for a luxury statement pendant, custom cocktail ring, or heirloom jewelry collection.
Jewelry Design Ideas for Statement Pendants and Rings
-
Romantic Statement Pendant: Set in an open back yellow gold or platinum bezel, this heart hangs naturally on a heavy gold chain as an eye catching focal piece.
-
Luxury Cocktail Ring: The flat reverse side allows custom jewelers to seat the stone securely into a halo setting accented by natural diamonds.
-
Anniversary or Heirloom Gift: Heart shaped black opals of this size and red intensity are seldom cut, making this a true collector treasure to pass down through generations.
October Birthstone
Opal is the celebrated birthstone for October. A genuine Australian black opal heart with intense red fire offers an unforgettable choice for milestone anniversaries, romantic proposals, and fine jewelry collectors.
Authenticity
100% natural solid Australian black opal. No treatments. No doublets or triplets. No smoked Ethiopian opal.
Certificate available upon request. Authentic & Trusted Opal Certification by Opal Galaxy
About Lightning Ridge Opal
Lightning Ridge is the most famous source of black opal and dark opal in the world. These genuine stones are prized for their dark body tones which enhance the visibility and contrast of the natural play of color.
Learn more
Lightning Ridge Black Opal Complete Guide | What Makes an Opal Valuable| Australian Opal Buying Guide | Which Star Signs Should Wear Opal?
Browse all black opals collection or contact us with questions.
Shipping Updates - March 2026
Latest international delivery information from Australia Post and FedEx.
USA Tariffย
USA customers do not need to pay any tariffs on their purchase. Opal Galaxy covers all tariff charges to the USA, with no additional government fees added after checkout.
Delivery Status
USA: No delays
Asia: No delays
UK: Minor delays possible (Complimentary EMS Express upgrade)
Europe: Minor delays possible (Complimentary EMS Express upgrade)
Middle East: Shipping temporarily suspended - Please contact us to discuss shipping arrangements before purchase.
Shipping Information
All shipping includes complimentary insurance.
Registered Shipping $15 under $200
Free Registered Shipping over $201
Free Worldwide EMS Express Shipping over $1000
Free Worldwide FedEx Shipping over $5000
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $100 FedEx Shipping Upgrade under $4999
Please view ourย Shipping Policyย page for more information.
7 day return and refund policy.
Please view ourย Return and Refundย page for more information.
We offer a lifetime guarantee for natural cracks that may form in our opals.
There is a very low chance that this can happen, however occasionally it might.
Our guarantee excludes any opals sold with existing fractures.
Please view our Terms and Conditions.
Caring for Your Australian Opal
Opal Jewelry
Important: Opals Are Fragile Gemstones
Opals are softer than sapphires, rubies, or diamonds and will crack or chip if struck hard against solid surfaces.
Always remove opal jewelry before:
Sports or physical activities
Manual labor, gardening, or gym workouts
Household tasks where impact is possible (lifting, moving furniture, etc.)
Even a minor knock during everyday wear can cause permanent damage. Treat opals as delicate gemstones, not everyday workwear.
Cleaning Your Opal
Clean with warm water and mild soap. Avoid harsh chemicals like bleach, ammonia, or chlorine. Light exposure to hand soap or dishwashing detergent is safe.
Storage
Store opal jewelry separately from harder gemstones (diamonds, sapphires) to prevent scratching.
Solid Natural Opals
(Black, Boulder, Crystal, White Opal)
Natural solid opals are stable and won't change color or crack from water, humidity, or temperature changes. They are safe to submerge in water and can be worn daily, provided they are protected from physical impact. Solid opals are a single piece of gemstone with no artificial backing, making them ideal for heirloom quality jewelry when handled with care.
Opal Doublets
Opal doublets consist of a thin slice of natural opal bonded to a dark backing. Do not submerge doublets in water as prolonged exposure can weaken the adhesive bond and cause separation or cloudiness. Remove doublet jewelry before swimming, bathing, or washing dishes. Clean with a damp cloth only; do not soak or use ultrasonic cleaners.
Like all opals, doublets are fragile and must be protected from impact.
Not sure which type you have? Solid opals show natural color throughout the stone. Doublets have a visible dark backing layer when viewed from the side.
Australian Black Opal Heart Lightning Ridge 4.34ct
€5,603
In stock
Details
|
Dimension: |
11.1 x 11.9 x 4.8 mm |
|
Weight: |
4.34ct |
|
Type: |
Natural Solid Untreated Black Opal |
|
Source: |
Mulga Field, Lightning Ridge Australia |
|
Sku: |
XX1881 |
|
Notes Dominant red fire, the most valuable color play in natural opal |
|
| Expertly shaped heart with high polished dome and flat back | |
| Completely natural gemstone with zero artificial treatments | |
| Free secure worldwide shipping included | |
You may also like
0.5ct Black Opal – Neon Red Rainbow Fire
Recently Viewed
Reviews
Silke
Susanna
helena
Lewis
Hakuna
sean pedersen
Wendy
Ashley
Charles
Stefan Delblanc
Christy
cookiemonster909
raj
Bruce
Bob
Julia Schwind
brent
Cornelia
Sharie
Caitlin
Deborah
Rachael Rocha
Brett
holbrookandtom
Lynton
Brent
Jaye
brent
Thomas L.
Irene
Richard
Sandy
Beverly S.
Cornelia
Quiao