This 7.2ct natural solid crystal boulder opal from Queensland reveals soft green fire glowing through its translucent opal body. This gemstone combines crystal transparency with sandstone backing, creating a gentle effect where the green color appears to shimmer within the stone. The delicate play of color makes this piece perfect for natural, organic jewelry designs with earthy appeal.
Expertly cut and polished into an oval cabochon measuring 15.9 x 12.5 x 5.6 mm, this natural gemstone offers comfortable proportions perfect for everyday jewelry. The translucent quality allows light to pass through, creating soft depth that changes throughout the day. This size works beautifully for sterling silver pendants where the glowing green can shine, or set in yellow gold or rose gold for warm, bohemian style rings. The stone pairs well with other natural gemstones for layered, casual jewelry looks that emphasize natural beauty over flash.
Completely natural and untreated, this is genuine solid Australian crystal boulder opal, not a doublet or triplet. The authentic Queensland origin guarantees you are receiving a natural gemstone with sandstone backing that crystal boulder opals are known for. This type offers good durability thanks to the backing material while maintaining attractive translucent character. The 5.6mm depth provides solid structure for comfortable everyday wear in pendants or occasional wear in rings.
As the official October birthstone, this natural gemstone carries symbolic meanings of creativity, passion, and inspiration. The soft green glow creates a peaceful, natural aesthetic perfect for casual jewelry, nature lovers, and those who appreciate unique gemstones with organic character. This accessible stone offers beautiful color at a friendly price point.
This natural crystal boulder opal will arrive securely packaged in an Opal Galaxy luxury gift box, ready for professional jewelry setting or safe storage.
Shipping Updates - March 2026
Latest international delivery information from Australia Post and FedEx.
USA Tariff
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 $4000
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $100 FedEx Shipping Upgrade under $3999
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.
7.2ct Crystal Boulder Opal
AU$539
In stock
Details
|
Dimension: |
15.9 × 12.5 × 5.6 mm |
|
Weight: |
7.2 ct |
|
Type: |
Natural Solid Untreated Crystal Boulder Opal |
|
Source: |
Winton, QLD, Australia |
|
Sku: |
XX1894 |
This 7.2ct natural solid crystal boulder opal from Queensland reveals soft green fire glowing through its translucent opal body. This gemstone combines crystal transparency with sandstone backing, creating a gentle effect where the green color appears to shimmer within the stone. The delicate play of color makes this piece perfect for natural, organic jewelry designs with earthy appeal.
Expertly cut and polished into an oval cabochon measuring 15.9 x 12.5 x 5.6 mm, this natural gemstone offers comfortable proportions perfect for everyday jewelry. The translucent quality allows light to pass through, creating soft depth that changes throughout the day. This size works beautifully for sterling silver pendants where the glowing green can shine, or set in yellow gold or rose gold for warm, bohemian style rings. The stone pairs well with other natural gemstones for layered, casual jewelry looks that emphasize natural beauty over flash.
Completely natural and untreated, this is genuine solid Australian crystal boulder opal, not a doublet or triplet. The authentic Queensland origin guarantees you are receiving a natural gemstone with sandstone backing that crystal boulder opals are known for. This type offers good durability thanks to the backing material while maintaining attractive translucent character. The 5.6mm depth provides solid structure for comfortable everyday wear in pendants or occasional wear in rings.
As the official October birthstone, this natural gemstone carries symbolic meanings of creativity, passion, and inspiration. The soft green glow creates a peaceful, natural aesthetic perfect for casual jewelry, nature lovers, and those who appreciate unique gemstones with organic character. This accessible stone offers beautiful color at a friendly price point.
This natural crystal boulder opal will arrive securely packaged in an Opal Galaxy luxury gift box, ready for professional jewelry setting or safe storage.
Shipping Updates - March 2026
Latest international delivery information from Australia Post and FedEx.
USA Tariff
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 $4000
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $100 FedEx Shipping Upgrade under $3999
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.
You may also like
Related products
Recently Viewed
Reviews
sean pedersen
Wendy
Ashley
Charles
Stefan Delblanc
Christy
cookiemonster909
raj
Bruce
Bob
Julia Schwind
brent
Cornelia
Sharie
Caitlin
Deborah
Rachael Rocha
Brett
holbrookandtom
Lynton
Brent
Jaye
brent
Thomas L.
Irene
Richard
Sandy
Beverly S.
Cornelia
Quiao