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Black Opal Matching Pair 3.17ct Double sided - 2nd video thumbnail
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This 3.17ct Lightning Ridge black opal matching pair offers loose stones for custom jewelry designs. These natural Australian black opals are ideal for collectors and jewelry makers looking for real gemstones. This oval shape authentic opal set makes an excellent October birthstone jewelry gift, a unique holiday present, or a custom anniversary surprise for her.

Jewelry Use

This rare matching pair provides excellent options for custom jewelry creation. The loose gemstone set includes one normal black opal and one unique double sided black opal with strong color flash visible on both sides. These premium stones offer a perfect layout for a master jeweler to create custom drop earrings, fine studs, a matching necklace, or a custom ring combination.

October Birthstone

Opal is the official October birthstone and is highly valued for its natural play of color. Multi color black opals are sought after for custom jewelry pieces and private gemstone collections.

Authenticity

100% natural solid Australian black opal. No treatments. No doublets or triplets. No smoked Ethiopian opal.

Certificate available upon request. Authentic & Trusted Opal Certification by Opal Galaxy

About Lightning Ridge Opal

Lightning Ridge is the most famous source of black opal and dark opal in the world. These genuine stones are prized for their dark body tones which enhance the visibility and contrast of the natural play of color.

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 $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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Black Opal Matching Pair 3.17ct Double sided

AU$14,285

In stock

Details

Dimension:

8.8 x 7.8 x 3.6 mm approx

Weight:

3.17 ct

Type:

Natural Solid Untreated Black Opal

Source:

Mulga Field, Lightning Ridge Australia

Sku:

XX1966

Notes

Opal: 1.67ct 8.8 x 7.8 x 3.6 mm approx
Double Sided Opal: 1.50ct 8.8 x 7.7 x 3.3 mm approx

This 3.17ct Lightning Ridge black opal matching pair offers loose stones for custom jewelry designs. These natural Australian black opals are ideal for collectors and jewelry makers looking for real gemstones. This oval shape authentic opal set makes an excellent October birthstone jewelry gift, a unique holiday present, or a custom anniversary surprise for her.

Jewelry Use

This rare matching pair provides excellent options for custom jewelry creation. The loose gemstone set includes one normal black opal and one unique double sided black opal with strong color flash visible on both sides. These premium stones offer a perfect layout for a master jeweler to create custom drop earrings, fine studs, a matching necklace, or a custom ring combination.

October Birthstone

Opal is the official October birthstone and is highly valued for its natural play of color. Multi color black opals are sought after for custom jewelry pieces and private gemstone collections.

Authenticity

100% natural solid Australian black opal. No treatments. No doublets or triplets. No smoked Ethiopian opal.

Certificate available upon request. Authentic & Trusted Opal Certification by Opal Galaxy

About Lightning Ridge Opal

Lightning Ridge is the most famous source of black opal and dark opal in the world. These genuine stones are prized for their dark body tones which enhance the visibility and contrast of the natural play of color.

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 $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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