Natural dark opal heart cabochon showing intense multicolor fire across the face.
Natural dark opal heart viewed at an angle highlighting vivid red green and orange fire.
Natural dark opal heart shown on fingers displaying bright multicolor fire and body tone.
Natural dark opal heart viewed from the side showing cabochon thickness and smooth polish.
Natural dark opal heart showing the polished back and natural dark base.
Natural dark opal heart displaying strong brightness with dominant red and green flashes.

1.67ct Natural Dark Opal Heart Vivid Multicolor Play-of-Color

This 1.67ct Natural Dark Opal Heart is a 100% solid, untreated opal, ethically sourced from Grawin, Lightning Ridge, NSW, Australiaa region known for producing some of the worlds most unique and vibrant dark opals.

๏ธ A Mesmerizing Opal with Stunning Color Play ๏ธ

This opal features an incredible kaleidoscope of colors, with bright flashes of red, fiery orange, golden yellow, electric green, and vibrant blue. Its semi-dark body tone enhances the contrast, making the colors appear even more intense and dynamic. As the light shifts, the play-of-color dances beautifully across the stone, creating a breathtaking effect that is truly one of a kind.
Expertly cut and polished into a heart shape, this opal is a symbol of love, passion, and rarity.

Whether set in a custom jewelry piece or cherished as a collectors gemstone, its unique beauty makes it an irreplaceable treasure.

Features & Benefits:

100% Natural Solid Dark Opal Ethically sourced from Grawin, Lightning Ridge, Australia.
Vibrant Multicolor Play-of-Color Bright flashes of red, orange, gold, green, and blue.
Semi-Dark Body Tone Enhances contrast and amplifies the opals striking hues.
Heart-Shaped & Expertly Polished A meaningful and rare gemstone.
Perfect for Jewelry & Collectors Ideal for a custom pendant, high-end ring, or investment piece.
October Birthstone A unique and thoughtful gift for birthdays, anniversaries, and special occasions.

Read about Buying Black Opals for Investment
Watch more opals on YouTube

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 $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 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.

Add to Wishlist

1.67ct Natural Dark Opal Heart

AU$1,075

In stock

Details

Dimension:

8.5ร—8ร—3.5 mm

Weight:

1.67ct

Type:

Natural Solid Untreated Dark Opal

Source:

Lightning Ridge, NSW, Australia

Sku:

XX1482

1.67ct Natural Dark Opal Heart Vivid Multicolor Play-of-Color

This 1.67ct Natural Dark Opal Heart is a 100% solid, untreated opal, ethically sourced from Grawin, Lightning Ridge, NSW, Australiaa region known for producing some of the worlds most unique and vibrant dark opals.

๏ธ A Mesmerizing Opal with Stunning Color Play ๏ธ

This opal features an incredible kaleidoscope of colors, with bright flashes of red, fiery orange, golden yellow, electric green, and vibrant blue. Its semi-dark body tone enhances the contrast, making the colors appear even more intense and dynamic. As the light shifts, the play-of-color dances beautifully across the stone, creating a breathtaking effect that is truly one of a kind.
Expertly cut and polished into a heart shape, this opal is a symbol of love, passion, and rarity.

Whether set in a custom jewelry piece or cherished as a collectors gemstone, its unique beauty makes it an irreplaceable treasure.

Features & Benefits:

100% Natural Solid Dark Opal Ethically sourced from Grawin, Lightning Ridge, Australia.
Vibrant Multicolor Play-of-Color Bright flashes of red, orange, gold, green, and blue.
Semi-Dark Body Tone Enhances contrast and amplifies the opals striking hues.
Heart-Shaped & Expertly Polished A meaningful and rare gemstone.
Perfect for Jewelry & Collectors Ideal for a custom pendant, high-end ring, or investment piece.
October Birthstone A unique and thoughtful gift for birthdays, anniversaries, and special occasions.

Read about Buying Black Opals for Investment
Watch more opals on YouTube

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 $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 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.

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