26.81ct Double Sided Vein Australian Koroit Boulder Opal front face view Australian opal gemstone Opal Galaxy product image
26.81ct Double Sided Vein Australian Koroit Boulder Opal angled view Australian opal gemstone Opal Galaxy product image
26.81ct Double Sided Vein Australian Koroit Boulder Opal back view Australian opal gemstone Opal Galaxy product image
26.81ct Double Sided Vein Australian Koroit Boulder Opal detail view Australian opal gemstone Opal Galaxy product image
26.81ct Double Sided Vein Australian Koroit Boulder Opal detail view Australian opal gemstone Opal Galaxy product image
26.81ct Double Sided Vein Australian Koroit Boulder Opal detail view Australian opal gemstone Opal Galaxy product image
26.81ct Double Sided Vein Australian Koroit Boulder Opal detail view Australian opal gemstone Opal Galaxy product image
26.81ct Double Sided Vein Australian Koroit Boulder Opal detail view Australian opal gemstone Opal Galaxy product image

Koroit Boulder Opal Double Sided Vein

This 26.81ct Natural Koroit Boulder Opal from Koroit, Australia features an intricate double-sided vein pattern in a highly polished oval shape. With its narrow, elongated form and electric flashes of blue, purple, and green nestled among rich honey-brown veins, this opal offers stunning natural symmetry and visual texture. Perfectly balanced, its ideal for one-of-a-kind pendant designs or as a showcase piece in any collectors trove.

Features & Benefits:
100% Natural Solid Boulder Opal Ethically mined in Koroit, QLD, Australia
Unique Double-Sided Vein Pattern Visual complexity on both faces of the stone
Play of Color Bright flecks of blue, green, and violet among warm matrix tones
Oval Freeform Design Suited for elongated pendants or custom centerpiece jewelry
October Birthstone A meaningful gift of creativity and individuality
One-of-a-Kind Collectors Piece Natural veins make each opal truly unique

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 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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26.81ct Double Sided Vein Australian Koroit Boulder Opal

AU$411

In stock

Details

Dimension:

46.5x12.5x4.5 mm

Weight:

26.81ct

Type:

Natural Solid Untreated Boulder Opal

Source:

Koroit, QLD, Australia

Sku:

KK26

Koroit Boulder Opal Double Sided Vein

This 26.81ct Natural Koroit Boulder Opal from Koroit, Australia features an intricate double-sided vein pattern in a highly polished oval shape. With its narrow, elongated form and electric flashes of blue, purple, and green nestled among rich honey-brown veins, this opal offers stunning natural symmetry and visual texture. Perfectly balanced, its ideal for one-of-a-kind pendant designs or as a showcase piece in any collectors trove.

Features & Benefits:
100% Natural Solid Boulder Opal Ethically mined in Koroit, QLD, Australia
Unique Double-Sided Vein Pattern Visual complexity on both faces of the stone
Play of Color Bright flecks of blue, green, and violet among warm matrix tones
Oval Freeform Design Suited for elongated pendants or custom centerpiece jewelry
October Birthstone A meaningful gift of creativity and individuality
One-of-a-Kind Collectors Piece Natural veins make each opal truly unique

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 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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