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This Coober Pedy crystal opal parcel contains 4 calibrated marquise stones totaling 1.38 carats in two paired sizes: two 10x5mm and two 8x4mm. All four stones display intense multicolor fire with red, pink, orange, yellow, green, and cyan flashes throughout transparent crystal bodies. The marquise cut maximizes fire visibility across the elongated surface, creating dramatic color displays from every angle. The paired sizing creates two complete earring sets with matched fire patterns.

The calibrated dimensions fit standard jewelry mountings, eliminating custom setting costs. The 10x5mm pair works for statement earrings or pendants, while the 8x4mm pair creates delicate studs or accent stones. Precision sizing ensures seamless professional finishing in bezel or prong settings across any metal. The transparent bodies allow light to enter from multiple directions, intensifying the fire and creating the bright, sparkling effect that makes these stones versatile for both bold and feminine designs.

Coober Pedy crystal opals offer excellent transparency and vibrant fire at accessible prices. Calibrated parcels with matched pairs like this simplify coordinated jewelry creation for professional jewelers. The solid structure provides durability for everyday wear while the rainbow fire creates the playful color impact crystal opals are valued for.

Authenticity: Natural solid crystal opal. Not treated, not synthetic. Authenticated by Yuka Hatano & Michael Shepherd, IGS Pro Members.

Learn more: What Makes an Opal Valuable | How to Choose the Right Opal

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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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10x5mm + 8x4mm Crystal Opal Calibrated 1.38ct

AU$1,124

In stock

Details

Dimension:

Large stones 10x5 mm / Small stones 8x4 mm

Weight:

1.38ctw

Type:

Natural Solid Untreated Crystal Opal

Source:

Coober Pedy, SA, Australia

Sku:

CC46

This Coober Pedy crystal opal parcel contains 4 calibrated marquise stones totaling 1.38 carats in two paired sizes: two 10x5mm and two 8x4mm. All four stones display intense multicolor fire with red, pink, orange, yellow, green, and cyan flashes throughout transparent crystal bodies. The marquise cut maximizes fire visibility across the elongated surface, creating dramatic color displays from every angle. The paired sizing creates two complete earring sets with matched fire patterns.

The calibrated dimensions fit standard jewelry mountings, eliminating custom setting costs. The 10x5mm pair works for statement earrings or pendants, while the 8x4mm pair creates delicate studs or accent stones. Precision sizing ensures seamless professional finishing in bezel or prong settings across any metal. The transparent bodies allow light to enter from multiple directions, intensifying the fire and creating the bright, sparkling effect that makes these stones versatile for both bold and feminine designs.

Coober Pedy crystal opals offer excellent transparency and vibrant fire at accessible prices. Calibrated parcels with matched pairs like this simplify coordinated jewelry creation for professional jewelers. The solid structure provides durability for everyday wear while the rainbow fire creates the playful color impact crystal opals are valued for.

Authenticity: Natural solid crystal opal. Not treated, not synthetic. Authenticated by Yuka Hatano & Michael Shepherd, IGS Pro Members.

Learn more: What Makes an Opal Valuable | How to Choose the Right Opal

ย 

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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