Gem blue crystal opal 2.75 ct oval cabochon on a black background showing strong blue green fire across the face.
Light crystal opal held between fingers with soft blue green and pastel flashes for the opal zodiac star signs page
Gem blue crystal opal 2.75 ct on fingertips to show size with bright blue green fire and rainbow sparkles.
Gem blue crystal opal 2.75 ct on a fingertip showing the oval shape and bright color play for size.
Side view of gem blue crystal opal 2.75 ct showing the low dome and polished edge with blue green fire.
Side angle of gem blue crystal opal 2.75 ct showing a thin edge and bright color play along the top.
Back view of gem blue crystal opal 2.75 ct held in fingers showing the clear base and oval shape.
Gem blue crystal opal 2.75 ct close view on black showing vivid blue green fire and clean polish.

This exquisite 2.75ct Lightning Ridge Crystal Opal radiates an exceptional rainbow play-of-color, featuring vivid flashes of green, red, blue, and violet that dance across its polished surface. Its gem-quality translucence allows light to pass through, enhancing the depth and brilliance of the opals color play from every angle.

A premium collectors gemstone, this opals balanced oval shape and high dome make it ideal for high-end custom jewelry such as a statement ring or luxury pendant. Sourced directly from Lightning Ridge, the worlds most famous opal region, this piece is 100% natural and untreated, ensuring authenticity and long-term value.

Why You will Love It:

  • Rare gem-grade crystal opal from Lightning Ridge

  • Dazzling multi-color fire with intense brightness

  • Natural & untreated no synthetic enhancements

  • Ideal for investment or bespoke jewelry creation

  • Comes with registered worldwide shipping

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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2.75ct Crystal Opal Lightning Ridge

AU$2,262

In stock

Details

Dimension:

15.2x9x3 mm

Weight:

2.75 ct

Type:

Natural Solid Untreated Crystal Opal

Source:

Lightning Ridge, NSW, Australia

Sku:

XX1269

This exquisite 2.75ct Lightning Ridge Crystal Opal radiates an exceptional rainbow play-of-color, featuring vivid flashes of green, red, blue, and violet that dance across its polished surface. Its gem-quality translucence allows light to pass through, enhancing the depth and brilliance of the opals color play from every angle.

A premium collectors gemstone, this opals balanced oval shape and high dome make it ideal for high-end custom jewelry such as a statement ring or luxury pendant. Sourced directly from Lightning Ridge, the worlds most famous opal region, this piece is 100% natural and untreated, ensuring authenticity and long-term value.

Why You will Love It:

  • Rare gem-grade crystal opal from Lightning Ridge

  • Dazzling multi-color fire with intense brightness

  • Natural & untreated no synthetic enhancements

  • Ideal for investment or bespoke jewelry creation

  • Comes with registered worldwide shipping

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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