2.6ct black crystal opal orange yellow green blue violet fire Lightning Ridge Australia opal galaxy XX1891
2.6ct natural Australian black crystal opal loose stone for jewelry setting opal galaxy XX1891
2.6ct solid Lightning Ridge black crystal opal polished cabochon gemstone opal galaxy XX1891
2.6ct oval cut polished black crystal opal multicolor fire October birthstone opal galaxy XX1891

This 2.6ct natural solid black crystal opal from Lightning Ridge, New South Wales, displays a vibrant spectrum of orange, yellow, green, violet, and blue fire across its polished oval surface. This genuine loose gemstone showcases the exceptional transparency and brilliant color play that makes Lightning Ridge crystal opals highly valued worldwide. The bright yellow and orange combined with electric green, deep violet, and vivid blue creates a mesmerizing rainbow effect that shifts dramatically with every angle.

Expertly cut and polished into a classic oval cabochon measuring 15.4 x 9.2 x 3 mm, this natural gemstone offers perfect proportions for versatile opal jewelry designs. The elegant oval shape works beautifully for opal rings where the stone can be the centerpiece of an engagement ring, cocktail ring, or statement piece. This size also makes an ideal focal point for opal pendants where the full spectrum of colors can be displayed. Whether set in yellow gold to enhance the warm tones, white gold or platinum for contemporary elegance, or rose gold for romantic appeal, this crystal opal will create eye catching jewelry. The stone pairs beautifully with diamonds or colored gemstones to create custom designs that showcase the vibrant fire.

Completely natural and untreated, this is genuine solid Australian black crystal opal, not a doublet or triplet. The authentic Lightning Ridge origin guarantees you are receiving premium quality material from the world's premier black opal region. The crystal clarity combined with the multicolor spectrum makes this stone particularly desirable for fine jewelry and collectors. The 3mm depth provides excellent durability for rings while maintaining brilliant transparency and color intensity.

As the official opal October birthstone, this natural gemstone carries symbolic meanings of creativity, passion, and inspiration. The full rainbow of colors within this single stone creates incredible versatility for any jewelry design while the crystal clarity ensures maximum brilliance and fire.

This natural black crystal opal will arrive securely packaged in an Opal Galaxy luxury gift box, ready for professional jewelry setting or safe storage as a collector gemstone.

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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2.6ct Black Crystal Opal

US$460

In stock

Details

Dimension:

15.4 x 9.2 x 3 mm

Weight:

2.6ct

Type:

Natural Solid Untreated Black Crystal Opal

Source:

Lightning Ridge, NSW, Australia

Sku:

XX1891

This 2.6ct natural solid black crystal opal from Lightning Ridge, New South Wales, displays a vibrant spectrum of orange, yellow, green, violet, and blue fire across its polished oval surface. This genuine loose gemstone showcases the exceptional transparency and brilliant color play that makes Lightning Ridge crystal opals highly valued worldwide. The bright yellow and orange combined with electric green, deep violet, and vivid blue creates a mesmerizing rainbow effect that shifts dramatically with every angle.

Expertly cut and polished into a classic oval cabochon measuring 15.4 x 9.2 x 3 mm, this natural gemstone offers perfect proportions for versatile opal jewelry designs. The elegant oval shape works beautifully for opal rings where the stone can be the centerpiece of an engagement ring, cocktail ring, or statement piece. This size also makes an ideal focal point for opal pendants where the full spectrum of colors can be displayed. Whether set in yellow gold to enhance the warm tones, white gold or platinum for contemporary elegance, or rose gold for romantic appeal, this crystal opal will create eye catching jewelry. The stone pairs beautifully with diamonds or colored gemstones to create custom designs that showcase the vibrant fire.

Completely natural and untreated, this is genuine solid Australian black crystal opal, not a doublet or triplet. The authentic Lightning Ridge origin guarantees you are receiving premium quality material from the world's premier black opal region. The crystal clarity combined with the multicolor spectrum makes this stone particularly desirable for fine jewelry and collectors. The 3mm depth provides excellent durability for rings while maintaining brilliant transparency and color intensity.

As the official opal October birthstone, this natural gemstone carries symbolic meanings of creativity, passion, and inspiration. The full rainbow of colors within this single stone creates incredible versatility for any jewelry design while the crystal clarity ensures maximum brilliance and fire.

This natural black crystal opal will arrive securely packaged in an Opal Galaxy luxury gift box, ready for professional jewelry setting or safe storage as a collector gemstone.

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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