24.7ct Winton boulder opal pendant with ocean blue green fire set in sterling silver shown on white background with reflection.
Australian boulder opal necklace from Winton worn on model displaying ocean blue and green colorplay in a horizontal sterling silver setting.
Back of 24.7ct Australian boulder opal pendant from Winton showing natural ironstone host rock in a sterling silver horizontal setting.
24.7ct Australian boulder opal from Winton featuring ocean blue and green fire set in a horizontal sterling silver pendant. Natural untreated solid opal.
24.7ct Winton boulder opal pendant with ocean blue green fire set in sterling silver shown on white background with reflection.

This 24.7ct natural Winton boulder opal pendant is set horizontally in 925 sterling silver, revealing flowing ocean blue and green fire across a polished freeform cabochon. The smooth curved profile and balanced proportions create a refined silhouette that sits elegantly along the neckline.

Measuring approximately 10 x 17.5 x 4.5 mm, this solid Australian boulder opal displays luminous blue dominance layered with vibrant green flashes and subtle hints of aqua through natural ironstone. The horizontal sterling silver frame follows the natural contour of the stone, keeping the full face color visible while maintaining a clean modern finish.

Finished with an 18 inch slightly adjustable sterling silver chain, this genuine Australian opal necklace is ready to wear immediately. Ideal for those seeking an ocean inspired boulder opal pendant with natural depth, fluid color movement, and everyday elegance.

A meaningful October birthstone gift or refined Australian opal jewelry piece inspired by the sea.

100% natural untreated solid boulder opal. Not a doublet or triplet.

Learn more: Boulder Opal Guide | Opal Pendant Care

Browse all opal pendants 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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Boulder Opal Pendant Sterling Silver 24.7ct

AU$605

In stock

Details

Dimension:

10 x 17.5 x 4.5 mm

Weight:

24.7ctw (Pendant and Necklace)

Type:

Natural Solid Untreated Boulder Opal

Source:

Winton, QLD, Australia

Sku:

NN708

Notes

Necklace: 18 inch (slightly adjustable)
Metal: 925 sterling silver pendant and necklace (stamped)

This 24.7ct natural Winton boulder opal pendant is set horizontally in 925 sterling silver, revealing flowing ocean blue and green fire across a polished freeform cabochon. The smooth curved profile and balanced proportions create a refined silhouette that sits elegantly along the neckline.

Measuring approximately 10 x 17.5 x 4.5 mm, this solid Australian boulder opal displays luminous blue dominance layered with vibrant green flashes and subtle hints of aqua through natural ironstone. The horizontal sterling silver frame follows the natural contour of the stone, keeping the full face color visible while maintaining a clean modern finish.

Finished with an 18 inch slightly adjustable sterling silver chain, this genuine Australian opal necklace is ready to wear immediately. Ideal for those seeking an ocean inspired boulder opal pendant with natural depth, fluid color movement, and everyday elegance.

A meaningful October birthstone gift or refined Australian opal jewelry piece inspired by the sea.

100% natural untreated solid boulder opal. Not a doublet or triplet.

Learn more: Boulder Opal Guide | Opal Pendant Care

Browse all opal pendants 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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