Natural crystal boulder opal close up showing intense green fire with purple flashes on a rectangular face.
Natural crystal boulder opal showing bright green fire with lavender purple flashes across the face.
Natural crystal boulder opal held upright showing vivid green fire and purple play of color
Natural crystal boulder opal shown on fingers to show size with strong green and purple fire.
Natural crystal boulder opal side profile showing the crystal layer and ironstone base.
Natural crystal boulder opal back view showing the ironstone backing and smooth finish.
Natural crystal boulder opal rectangular cabochon with neon green fire and lavender purple flashes.

This 4.53ct natural crystal boulder opal from Winton bursts with dramatic neon green and violet fire across a luminous translucent body. Shaped in a sleek rectangle and highly polished, this metallic opal showcases intense pipe opal characteristicsbold color zones and dynamic depth. A premium gemstone perfect for luxury pendant settings or striking modern jewelry design.

Features & Benefits:
100% Natural Solid Pipe Crystal Opal Sourced from Wintons legendary deposits
Neon Play-of-Color Electric green and violet flashes dominate the surface
Rectangular Cut Elegant and ideal for sleek custom settings
Polished Finish Ready to mount in fine jewelry
October Birthstone A timeless and symbolic gem
Collectors Grade A unique stone with high visual impact

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 $80 FedEx Shipping Upgrade under $3999

All shipping includes complimentary insurance.
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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4.53ct Natural Crystal Boulder Opal

AU$428

In stock

Details

Dimension:

17x7.5x4 mm

Weight:

4.53ct

Type:

Natural Solid Untreated Crystal Boulder Opal

Source:

Winton, QLD, Australia

Sku:

PP522

This 4.53ct natural crystal boulder opal from Winton bursts with dramatic neon green and violet fire across a luminous translucent body. Shaped in a sleek rectangle and highly polished, this metallic opal showcases intense pipe opal characteristicsbold color zones and dynamic depth. A premium gemstone perfect for luxury pendant settings or striking modern jewelry design.

Features & Benefits:
100% Natural Solid Pipe Crystal Opal Sourced from Wintons legendary deposits
Neon Play-of-Color Electric green and violet flashes dominate the surface
Rectangular Cut Elegant and ideal for sleek custom settings
Polished Finish Ready to mount in fine jewelry
October Birthstone A timeless and symbolic gem
Collectors Grade A unique stone with high visual impact

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 $80 FedEx Shipping Upgrade under $3999

All shipping includes complimentary insurance.
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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