Heart shape natural dark opal showing bright blue green and orange fire
Heart shape dark opal held between fingers showing blue green fire
Heart shape dark opal held on fingers showing multicolor pattern
Side view of heart shape dark opal showing stone thickness
Edge view of heart shape dark opal showing color layer
Back of heart shape dark opal showing smooth dark base
Heart shape natural dark opal showing strong multicolor fire full face

Fiery Multicolor Australian Opal Heart

This 3.72ct Natural Dark Opal Heart is a showpiece of vibrant Australian fire. Mined from Lightning Ridge and expertly polished into a smooth heart cabochon, this opal bursts with radiant flashes of fiery red, orange, gold, green, and deep violet, shimmering across a dark body tone that enhances its depth and dimension.

The symmetrical heart shape makes this opal especially desirable for fine jewelry, while its vivid multicolor fire makes it truly rare. Lightning Ridge dark opals are celebrated for their intensity, and this stone captures that reputation beautifully.

Ideal for designers looking to create a one-of-a-kind pendant or ring, this opal is equally suited for gemstone investors and collectors. Its natural origin, untreated purity, and full-spectrum color play make it a timeless treasure.

The best heart-shaped opals come from Opal Galaxy.

Features & Benefits:
Natural Dark Opal Ethically sourced and polished to perfection
Vivid Rainbow Fire Includes red, green, violet, gold, and orange hues
Heart-Shaped Cut Ideal for high-end jewelry or display
Rare & One-of-a-Kind A powerful collectors piece from Lightning Ridge
October Birthstone Believed to inspire emotional depth and creative energy

Want to learn more? Buying Black Opals for Investment
Watch more 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.

Add to Wishlist

3.72ct Natural Dark Opal Heart – Multicolor Fire

AU$3,676

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

Fiery Multicolor Australian Opal Heart

This 3.72ct Natural Dark Opal Heart is a showpiece of vibrant Australian fire. Mined from Lightning Ridge and expertly polished into a smooth heart cabochon, this opal bursts with radiant flashes of fiery red, orange, gold, green, and deep violet, shimmering across a dark body tone that enhances its depth and dimension.

The symmetrical heart shape makes this opal especially desirable for fine jewelry, while its vivid multicolor fire makes it truly rare. Lightning Ridge dark opals are celebrated for their intensity, and this stone captures that reputation beautifully.

Ideal for designers looking to create a one-of-a-kind pendant or ring, this opal is equally suited for gemstone investors and collectors. Its natural origin, untreated purity, and full-spectrum color play make it a timeless treasure.

The best heart-shaped opals come from Opal Galaxy.

Features & Benefits:
Natural Dark Opal Ethically sourced and polished to perfection
Vivid Rainbow Fire Includes red, green, violet, gold, and orange hues
Heart-Shaped Cut Ideal for high-end jewelry or display
Rare & One-of-a-Kind A powerful collectors piece from Lightning Ridge
October Birthstone Believed to inspire emotional depth and creative energy

Want to learn more? Buying Black Opals for Investment
Watch more 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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