Oval dark opal showing bright red pink and green colors
Natural dark opal oval close up showing red pink color patches
Small oval dark opal held between fingers showing color flash
Natural dark opal oval shown upright on fingers with color play
Oval dark opal held on fingers showing multicolor pattern
Side view of natural dark opal showing stone thickness
Back of natural dark opal oval showing smooth dark base
Oval dark opal showing multicolor fire on dark body tone

This natural solid Australian black opal from Lightning Ridge displays strong red fire across the surface, supported by green and yellow flashes with high contrast and brightness. The color is bold and concentrated, making it suitable as a center stone for an opal ring, opal pendant, or fine jewelry, as well as a high-impact display gemstone.

Jewelry Use

This oval cabochon is well suited for ring settings, pendants, or custom jewelry where strong color and presence are the focus.

October Birthstone

Opal is the birthstone for October, valued for its natural play of color and individuality, making it a meaningful gemstone for fine jewelry.

About Lightning Ridge Opal

Lightning Ridge opal is known for its dark base and ability to display vivid color contrast, with red being one of the most valuable and sought after colors.

Authenticity

100% natural solid Australian Dark opal. No treatments. No doublets or triplets. Not smoked Ethiopian opal.

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

Browse all dark 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 $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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Dark Opal 5.43ct Red and Multicolor Fire

US$1,165

In stock

Details

Dimension:

13.8 x 11.4 x 5.3 mm

Weight:

5.43 ct

Type:

Natural Solid Untreated Dark Opal

Source:

Lightning Ridge, NSW, Australia

Sku:

XX1636

This natural solid Australian black opal from Lightning Ridge displays strong red fire across the surface, supported by green and yellow flashes with high contrast and brightness. The color is bold and concentrated, making it suitable as a center stone for an opal ring, opal pendant, or fine jewelry, as well as a high-impact display gemstone.

Jewelry Use

This oval cabochon is well suited for ring settings, pendants, or custom jewelry where strong color and presence are the focus.

October Birthstone

Opal is the birthstone for October, valued for its natural play of color and individuality, making it a meaningful gemstone for fine jewelry.

About Lightning Ridge Opal

Lightning Ridge opal is known for its dark base and ability to display vivid color contrast, with red being one of the most valuable and sought after colors.

Authenticity

100% natural solid Australian Dark opal. No treatments. No doublets or triplets. Not smoked Ethiopian opal.

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

Browse all dark 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 $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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