New
Boulder opal rubs parcel 430 grams from Winton Queensland showing blue and green color
Boulder opal rubs parcel with ruler for size reference, Winton Queensland rough opal
Boulder opal rubs parcel 430 grams group shot

Boulder Opal Rubs

This parcel contains 47 boulder opal rubs totaling 430 grams, sourced directly from the Winton opal fields in Queensland, Australia. Rubs are opal pieces that have already been shaped and ground down to reveal the color bar, saving significant cutting time for lapidary work compared to starting from raw rough.

Several pieces in this parcel show full faced blue and green color across the surface, with the ironstone matrix providing natural contrast and strength to each stone. Boulder opal from Winton is known for its durability, as the ironstone backing gives the finished stone extra thickness and resistance to chipping compared to solid crystal or black opal.

Please note the parcel has been photographed wet to show the true color and pattern of each piece under LED lighting. Buyers with lapidary experience will get the most value from this parcel, as the rubs still require final shaping, sanding and polishing to bring out full brilliance.

This is genuine natural Australian boulder opal with no treatments or enhancements applied. A ruler is included in the second photo for accurate size reference across all pieces.

Price includes worldwide registered express shipping with full insurance coverage.

Learn about Opal Cutting 

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 Rubs Parcel 430 grams

2,429

In stock

Details

Dimension:

See ruler in image

Weight:

430 grams

Type:

Natural Solid Untreated Boulder Opal

Source:

Winton, QLD, Australia

Sku:

RP253

Notes

Quantity: 47 Pieces
Beautiful parcel of boulder opal rubs, ready for shaping and polishing. Featuring some stunning, full faced blue and green opals. Opals are wet to show color and taken under LED Lighting. Price includes Worldwide registered express shipping with insurance.

Boulder Opal Rubs

This parcel contains 47 boulder opal rubs totaling 430 grams, sourced directly from the Winton opal fields in Queensland, Australia. Rubs are opal pieces that have already been shaped and ground down to reveal the color bar, saving significant cutting time for lapidary work compared to starting from raw rough.

Several pieces in this parcel show full faced blue and green color across the surface, with the ironstone matrix providing natural contrast and strength to each stone. Boulder opal from Winton is known for its durability, as the ironstone backing gives the finished stone extra thickness and resistance to chipping compared to solid crystal or black opal.

Please note the parcel has been photographed wet to show the true color and pattern of each piece under LED lighting. Buyers with lapidary experience will get the most value from this parcel, as the rubs still require final shaping, sanding and polishing to bring out full brilliance.

This is genuine natural Australian boulder opal with no treatments or enhancements applied. A ruler is included in the second photo for accurate size reference across all pieces.

Price includes worldwide registered express shipping with full insurance coverage.

Learn about Opal Cutting 

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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