Front view of boulder opal pendant purplish blue triangular shape 25.6ct on 18 inch adjustable silver chain natural Australian opal.
Boulder opal pendant in purplish blue triangular shape worn on 18 inch silver chain, natural untreated Australian opal 25.6ct.
Back view of boulder opal pendant 25.6ct showing natural ironstone backing and silver bezel setting horizontal style.
Boulder opal pendant with purplish blue fire shown on black background 25.6ct triangular shape horizontal style natural Australian opal.
Front view of boulder opal pendant purplish blue triangular shape 25.6ct on 18 inch adjustable silver chain natural Australian opal.

This boulder opal pendant features a striking purplish blue triangular shape set in an elegant sterling silver bezel. The horizontal style enhances its natural geometry, creating a modern, balanced silhouette that sits beautifully along the collarbone.

The polished face reveals deep blue tones layered with violet and electric highlights, shifting subtly as the light moves across the surface. Natural ironstone remains visible along the lower edge, grounding the vibrant color with organic Australian character.

Measuring approximately 9 x 23 x 4 mm and weighing 25.6ct, this solid Australian boulder opal offers refined proportions ideal for everyday wear while still delivering strong visual presence. The smooth bezel setting frames the stone cleanly, allowing the full face color to remain uninterrupted.

Finished with an 18 inch slightly adjustable sterling silver chain, this opal pendant is ready to wear immediately. Its triangular horizontal design makes it both contemporary and timeless, suitable for layering or wearing as a standalone statement.

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

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 Purple 25.6ct

AU$677

In stock

Details

Dimension:

9 x 23 x 4 mm

Weight:

25.6ctw (Pendant and Necklace)

Type:

Natural Solid Untreated Boulder Opal

Source:

Winton, QLD, Australia

Sku:

NN710

Notes

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

This boulder opal pendant features a striking purplish blue triangular shape set in an elegant sterling silver bezel. The horizontal style enhances its natural geometry, creating a modern, balanced silhouette that sits beautifully along the collarbone.

The polished face reveals deep blue tones layered with violet and electric highlights, shifting subtly as the light moves across the surface. Natural ironstone remains visible along the lower edge, grounding the vibrant color with organic Australian character.

Measuring approximately 9 x 23 x 4 mm and weighing 25.6ct, this solid Australian boulder opal offers refined proportions ideal for everyday wear while still delivering strong visual presence. The smooth bezel setting frames the stone cleanly, allowing the full face color to remain uninterrupted.

Finished with an 18 inch slightly adjustable sterling silver chain, this opal pendant is ready to wear immediately. Its triangular horizontal design makes it both contemporary and timeless, suitable for layering or wearing as a standalone statement.

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

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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