5.26ct natural solid black opal heart on white background, displaying deep royal blue and green play-of-colour with violet and teal accents across a dark black body, Lightning Ridge Australia
5.26ct solid black opal heart in close-up, showing sweeping deep blue, green and violet play-of-colour with fine feather patterning against a dark body tone, Lightning Ridge Australia
5.26ct solid black opal heart resting on a fingertip, showing vivid deep blue and violet play-of-colour across a dark translucent body, Lightning Ridge Australia
5.26ct natural black opal heart held against fingers, displaying deep royal blue and purple play-of-colour across a polished dark body, Lightning Ridge Australia
5.26ct natural solid black opal heart resting in a palm, displaying deep electric blue play-of-colour with violet and white streaks against a dark black body tone, Lightning Ridge Australia
5-26ct-natural-black-opal-heart-deep-blue-xx1808

This 5.26ct natural solid black opal from Lightning Ridge Australia is cut into a heart cabochon and polished to perfection.
Measuring 13.5 × 16.7 × 4 mm, it showcases a striking black body illuminated by vivid blue and green fire that dances across the surface under different lighting.

The vivid flashes of blue and green make this stone an excellent choice for custom engagement rings, pendants, or one of a kind fine jewelry creations.
Its polished cabochon finish highlights the fire while maintaining durability for setting into everyday or statement jewelry pieces.
Heart shaped black opals are highly prized by both jewelers and collectors, as they combine rarity with symbolic meaning.

Ethically sourced and guaranteed 100% natural, this Lightning Ridge black opal is untreated and not a doublet or triplet.
With its impressive carat weight and striking fire, it offers both beauty and long term value, making it a desirable addition for collectors or those seeking investment grade opals.

As the October birthstone, opal represents creativity, passion, and emotional depth.
This heart black opal is not just a gemstone but also a meaningful symbol of love, making it perfect for jewelry design or private collections.

Your opal will be shipped securely in our elegant Opal Galaxy packaging for a premium unboxing experience.

Watch more opals on our YouTube Channel

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 $4000
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $100 FedEx Shipping Upgrade under $3999

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.

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5.26ct Natural Black Opal Heart Deep Blue Green Fire

AU$1,659

In stock

Details

Dimension:

13.5×16.7×4 mm

Weight:

5.26ct

Type:

Natural Solid Untreated Black Opal

Source:

Lightning Ridge, NSW, Australia

Sku:

XX1808

This 5.26ct natural solid black opal from Lightning Ridge Australia is cut into a heart cabochon and polished to perfection.
Measuring 13.5 × 16.7 × 4 mm, it showcases a striking black body illuminated by vivid blue and green fire that dances across the surface under different lighting.

The vivid flashes of blue and green make this stone an excellent choice for custom engagement rings, pendants, or one of a kind fine jewelry creations.
Its polished cabochon finish highlights the fire while maintaining durability for setting into everyday or statement jewelry pieces.
Heart shaped black opals are highly prized by both jewelers and collectors, as they combine rarity with symbolic meaning.

Ethically sourced and guaranteed 100% natural, this Lightning Ridge black opal is untreated and not a doublet or triplet.
With its impressive carat weight and striking fire, it offers both beauty and long term value, making it a desirable addition for collectors or those seeking investment grade opals.

As the October birthstone, opal represents creativity, passion, and emotional depth.
This heart black opal is not just a gemstone but also a meaningful symbol of love, making it perfect for jewelry design or private collections.

Your opal will be shipped securely in our elegant Opal Galaxy packaging for a premium unboxing experience.

Watch more opals on our YouTube Channel

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 $4000
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $100 FedEx Shipping Upgrade under $3999

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.

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