-15%
Natural 28.8ct boulder opal pendant in silver showing blue and green play of color on a curved freeform opal
28-8ct-australian-boulder-opal-pendant-back-ironstone-view-opal-galaxy-nn700
28-8ct-boulder-opal-pendant-silver-chain-wear-view-opal-galaxy-nn700
28-8ct-boulder-opal-horizontal-sterling-silver-pendant-blue-green-opal-galaxy-nn700

This 28.8ct natural boulder opal pendant necklace is set horizontally in 925 sterling silver, revealing vivid blue and green fire across a polished elongated cabochon. The side to side orientation creates a clean modern profile suitable for everyday wear or statement layering.

Sourced from Winton, Queensland, this solid Australian boulder opal displays strong blue dominance with vibrant green flashes over natural ironstone. The horizontal sterling silver setting enhances the stone’s width and visual presence along the neckline.

Finished with an adjustable 18 inch sterling silver chain, this genuine Australian opal necklace is ready to wear immediately. Ideal for those seeking a blue green boulder opal pendant with balanced proportions and contemporary structure.

A meaningful October birthstone gift or refined Australian opal jewelry piece.

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

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 28.8ct

Original price was: AU$739.Current price is: AU$628.

In stock

Details

Dimension:

9.6 x 25.5 × 4 mm

Weight:

28.8ctw (Pendant and Necklace)

Type:

Natural Solid Untreated Boulder Opal

Source:

Winton, QLD, Australia

Sku:

NN700

Notes

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

This 28.8ct natural boulder opal pendant necklace is set horizontally in 925 sterling silver, revealing vivid blue and green fire across a polished elongated cabochon. The side to side orientation creates a clean modern profile suitable for everyday wear or statement layering.

Sourced from Winton, Queensland, this solid Australian boulder opal displays strong blue dominance with vibrant green flashes over natural ironstone. The horizontal sterling silver setting enhances the stone’s width and visual presence along the neckline.

Finished with an adjustable 18 inch sterling silver chain, this genuine Australian opal necklace is ready to wear immediately. Ideal for those seeking a blue green boulder opal pendant with balanced proportions and contemporary structure.

A meaningful October birthstone gift or refined Australian opal jewelry piece.

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

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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