Dark Opal Heart Lightning Ridge 3.72ct Red Fire Multicolor Gem
This Lightning Ridge Dark Opal Heart 3.72ct natural Australian gemstone displays exceptional multicolor brilliance with fiery red, blazing orange, glowing yellow, vivid green, and bright cyan blue. Carved into a sweetheart cabochon shape, this solid untreated gemstone presents a dark body tone that makes the intense neon rainbow colors ignite across the face. With its substantial spread and rare red fire dominance, it makes a spectacular centerpiece for a statement necklace pendant, custom bezel enhancer, or private collection.
Gemstone Profile
Mined in the famous outback fields of Lightning Ridge, Australia, this solid dark opal exhibits the most sought after color spectrum in the opal world. True red fire is the rarest and most valuable expression of light in natural opals, and this stone features radiant red and orange ribbons floating alongside electric yellow, cool green, and deep cyan. The stone displays a balanced, symmetrical heart outline that sits comfortably flat on the reverse for straightforward mounting in fine jewelry settings.
Jewelry Design Ideas for Heart Pendants
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Solitaire Heart Drop Pendant: The classic heart silhouette shines brilliantly suspended from a bail in yellow gold, rose gold, or white gold.
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Custom Bezel Setting: A sleek protective bezel outlines the sweetheart shape, framing the vivid colors while safeguarding the edges.
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Halo Cocktail Pendant: Surrounding this 15 mm gem with natural white diamonds or colored accent stones creates an unforgettable luxury heirloom.
October Birthstone
Opal is the traditional birthstone for October. A genuine Australian dark opal with full spectrum neon rainbow fire makes a memorable gift for milestone birthdays, anniversaries, or fine gemstone collections.
Authenticity
Solid natural untreated Australian dark opal. Guaranteed completely free from synthetic treatments, dye, smoke enhancements, doublets, or triplets.
Official certificate available upon request. Authentic & Trusted Opal Certification by Opal Galaxy
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 Tariff
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 our Shipping Policy page for more information.
7 day return and refund policy.
Please view our Return and Refund 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.
3.72ct Lightning Ridge Dark Opal Heart
US$2,600
In stock
Details
|
Dimension: |
14.8×15×3 mm |
|
Weight: |
3.72ct |
|
Type: |
Natural Solid Untreated Dark Opal |
|
Source: |
Lightning Ridge, NSW, Australia |
|
Sku: |
XX1639 |
|
Notes Symmetrical heart shape ideal for necklace pendants |
|
| Rare red fire and multicolor spectrum across the entire surface | |
| Flat back for simple and secure mounting | |
| 100 percent genuine natural gemstone with no treatments | |
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