silver Australian boulder opal pendant with necklace 16.5 ct showing strong blue green fire pattern
silver Australian boulder opal pendant with necklace 16.5 ct held on finger showing vivid green blue color play
angled necklace view of silver Australian boulder opal pendant with necklace 16.5 ct showing color play
silver Australian boulder opal pendant with necklace 16.5 ct necklace showing natural Australian opal
silver Australian boulder opal pendant with necklace 16.5 ct showing bright blue and green fire
close view of silver Australian boulder opal pendant with necklace 16.5 ct clasp and chain detail
back of silver Australian boulder opal pendant with necklace 16.5 ct showing natural brown ironstone base
41cm Silver Color Chain
41cm Gold Color Chain
Adjustable Cream Wax Rope
Adjustable Black Wax Rope

This 16.5ct boulder opal pendant from Queensland Australia features vivid blue and green fire glowing through its polished brown ironstone matrix.
The natural opal is solid and untreated, not a doublet or triplet, making it a genuine gemstone with lasting value.

Set in a stamped S925 rhodium plated sterling silver pendant, this polished cabochon measures 33 ร— 7 ร— 4.5 mm and has a slim elongated design that is both elegant and striking.
Its bright play of color makes it suitable for both everyday wear and statement jewelry styling.

Perfect as October birthstone jewelry, this opal pendant carries symbolism of creativity and passion, making it a meaningful gift for birthdays, anniversaries, or special milestones.
Whether purchased as an opal jewelry gift, a silver opal necklace, or a collectible piece for an opal enthusiast, it delivers timeless beauty and authenticity.

Your pendant will arrive gift ready in our Opal Galaxy packaging, ensuring a delightful unboxing experience.

Connect with us:
Follow the Opal Galaxy Facebook pageย 
Subscribe to the Opal Galaxy YouTube pageย 
Check Opal Galaxy's Pinterest page

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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Natural Boulder Opal Pendant Sterling Silver Blue Green Fire 16.5 ct

AU$452

Details

Dimension:

33x7x4.5 mm

Weight:

16.5 ct (Whole Pendant)

Type:

Natural Solid Untreated Boulder Opal

Source:

Winton, QLD, Australia

Sku:

NN551

Notes

Pendant: S925 Stamped Sterling Silver with Rhodium Plated

This 16.5ct boulder opal pendant from Queensland Australia features vivid blue and green fire glowing through its polished brown ironstone matrix.
The natural opal is solid and untreated, not a doublet or triplet, making it a genuine gemstone with lasting value.

Set in a stamped S925 rhodium plated sterling silver pendant, this polished cabochon measures 33 ร— 7 ร— 4.5 mm and has a slim elongated design that is both elegant and striking.
Its bright play of color makes it suitable for both everyday wear and statement jewelry styling.

Perfect as October birthstone jewelry, this opal pendant carries symbolism of creativity and passion, making it a meaningful gift for birthdays, anniversaries, or special milestones.
Whether purchased as an opal jewelry gift, a silver opal necklace, or a collectible piece for an opal enthusiast, it delivers timeless beauty and authenticity.

Your pendant will arrive gift ready in our Opal Galaxy packaging, ensuring a delightful unboxing experience.

Connect with us:
Follow the Opal Galaxy Facebook pageย 
Subscribe to the Opal Galaxy YouTube pageย 
Check Opal Galaxy's Pinterest page

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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