This 0.64ct natural Australian dark opal was mined in Lightning Ridge New South Wales Australia. Cut into a smooth teardrop pear cabochon, this solid loose gemstone features bright red, orange, yellow, green, and pink fire over a dark semi crystal base. A vivid gem suited for a custom ring, fine pendant, or bespoke jewelry piece.
Jewelry Making with Dark Opal 0.64ct
Measuring over 10 mm in length with a low 1.7 mm profile, this gemstone displays a generous spread that looks much larger than its carat weight suggests. It is suited for a fine bezel ring, delicate pendant drop, or custom gold jewelry design. The flat back provides a stable base for prong or bezel mountings.
October Birthstone
Opal is the traditional October birthstone. This natural dark opal works well for a custom birthstone jewelry piece or a fine gemstone collection.
Authenticity
100% natural solid Australian opal. No treatments. No doublets or triplets. Not smoked Ethiopian opal.
Certificate available upon request. Authentic & Trusted Opal Certification by Opal Galaxy
Learn more
Lightning Ridge Black Opal Complete Guide | What Makes an Opal Valuable| Australian Opal Buying Guide | Which Star Signs Should Wear Opal?
Browse all Dark opals collection or contact us with questions.
Shipping Updates - March 2026
Latest international delivery information from Australia Post and FedEx.
USA Tariffย
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 $5000
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $100 FedEx Shipping Upgrade under $4999
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.
Australian Dark Opal Pear 0.64ct Lightning Ridge
AU$383
In stock
Details
|
Dimension: |
10.8 mm x 6.4 mm x 1.7 mm |
|
Weight: |
0.64ct |
|
Type: |
Natural Solid Untreated Dark Opal |
|
Source: |
Lightning Ridge, NSW, Australia |
|
Sku: |
XX2013 |
|
Notes Bright red and rainbow fire across a dark semi crystal base |
|
| Flat back for simple bezel or prong mounting | |
| Completely natural gemstone with zero chemical or heat treatments | |
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