A calibrated parcel of 4mm round opal doublets, totaling 3.7ctw, consisting of 16 matched stones selected for consistent size, polish, and strong multicolor fire.
Each stone is a natural Australian opal doublet, made from a thin layer of genuine precious opal bonded to a natural ironstone backing. This construction enhances contrast and allows vivid flashes of red, orange, yellow, green, and blueto stand out clearly across the parcel.
All stones are professionally polished as smooth cabochons and precisely calibrated to 4mm, making them suitable for standard jewelry settings without additional cutting or adjustment.
The 4mm size is ideal for rings, earrings, pendants, and accent settings, where slightly larger calibrated stones are required for visual impact and clean setting work. These stones are supplied as opal doublets only, not solid opals and not triplets, with full disclosure of their assembled construction.
A practical and visually strong parcel for jewelers, setters, and designers working with calibrated Australian opal doublets.
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.
4mm Opal Doublet Calibrated 3.7ct
€293
In stock
Details
|
Dimension: |
4mm calibrated |
|
Weight: |
3.7ctw |
|
Type: |
Opal Doublet |
|
Source: |
Coober Pedy, SA, Australia |
|
Sku: |
CC56 |
A calibrated parcel of 4mm round opal doublets, totaling 3.7ctw, consisting of 16 matched stones selected for consistent size, polish, and strong multicolor fire.
Each stone is a natural Australian opal doublet, made from a thin layer of genuine precious opal bonded to a natural ironstone backing. This construction enhances contrast and allows vivid flashes of red, orange, yellow, green, and blueto stand out clearly across the parcel.
All stones are professionally polished as smooth cabochons and precisely calibrated to 4mm, making them suitable for standard jewelry settings without additional cutting or adjustment.
The 4mm size is ideal for rings, earrings, pendants, and accent settings, where slightly larger calibrated stones are required for visual impact and clean setting work. These stones are supplied as opal doublets only, not solid opals and not triplets, with full disclosure of their assembled construction.
A practical and visually strong parcel for jewelers, setters, and designers working with calibrated Australian opal doublets.
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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