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4.6ct Genuine Australian boulder opal from Winton features a rare high grade pattern with a vivid pinkish orange yellow and green and blue play of color. Meticulously polished into a teardrop shape, this premium jewelry stone shows intense fiery flashes from every angle and is perfect to make into a custom ring or luxury pendant.

Jewelry Use

This loose jewelry gem offers a stunning center piece option for high end custom rings or designer jewelry settings. The elegant teardrop shape looks spectacular when bezel set in yellow gold or platinum designs.

October Birthstone

Present a truly magnificent luxury gift to someone celebrating an October birthday. This rare jewelry grade boulder opal provides an exceptional option to create custom jewelry due to its unique teardrop profile and rare colors.


Authenticity

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

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

About Winton Opal Fields

The famous outback region of Winton Australia is renowned for producing exceptionally bright ironstone boulder opals. Natural geological formations create a deep contrast that locks in the most vibrant pinkish and golden fire tones.


Learn more

Winton Boulder Opal Guide | What Makes an Opal Valuable| Australian Opal Buying Guide | Which Star Signs Should Wear Opal?

Browse all boulder opals collection or contact us with questions.

ย 

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

Boulder Opal 4.6ct Vivid Multicolor Fire

AU$2,742

In stock

Details

Dimension:

18.5mm x 7.3mm x 4mm

Weight:

4.6 ct

Type:

Natural Solid Untreated Boulder Opal

Source:

Winton, QLD, Australia

Sku:

XX1963

4.6ct Genuine Australian boulder opal from Winton features a rare high grade pattern with a vivid pinkish orange yellow and green and blue play of color. Meticulously polished into a teardrop shape, this premium jewelry stone shows intense fiery flashes from every angle and is perfect to make into a custom ring or luxury pendant.

Jewelry Use

This loose jewelry gem offers a stunning center piece option for high end custom rings or designer jewelry settings. The elegant teardrop shape looks spectacular when bezel set in yellow gold or platinum designs.

October Birthstone

Present a truly magnificent luxury gift to someone celebrating an October birthday. This rare jewelry grade boulder opal provides an exceptional option to create custom jewelry due to its unique teardrop profile and rare colors.


Authenticity

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

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

About Winton Opal Fields

The famous outback region of Winton Australia is renowned for producing exceptionally bright ironstone boulder opals. Natural geological formations create a deep contrast that locks in the most vibrant pinkish and golden fire tones.


Learn more

Winton Boulder Opal Guide | What Makes an Opal Valuable| Australian Opal Buying Guide | Which Star Signs Should Wear Opal?

Browse all boulder opals collection or contact us with questions.

ย 

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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