This crystal boulder opal from Queensland showcases an impressive display of vibrant green and blue fire dancing across its translucent body. Bold flashes of emerald and lime green intermingle with electric blue and purple, creating a dynamic play of color that shifts dramatically with every angle of light. The teardrop shape provides an expansive canvas for the opal's natural brilliance, with concentrated bursts of color distributed throughout the stone's polished surface.
At 15.7 x 11.1 x 4.7 mm and weighing 4.45 carats, this substantial teardrop crystal boulder opal offers generous proportions ideal for statement pendant necklaces or prominent ring designs. The elegant pear shape creates a sophisticated silhouette that flatters in both modern and vintage inspired settings. This opal works beautifully in custom jewelry settings with sterling silver for bohemian designs, or can be showcased in gold for more refined fine jewelry pieces.
This completely natural and untreated solid opal retains its authentic ironstone backing, which provides structural stability while displaying the genuine character of Queensland crystal boulder opal. Not a doublet or triplet, this gemstone features the vibrant color intensity and translucency that make crystal boulder opals appealing to jewelry designers and collectors seeking distinctive stones at accessible price points. The larger size and bold color play offer exceptional visual impact.
As the official opal October birthstone, this gemstone represents hope, creativity, and inspiration. The striking green and blue palette combined with the elegant teardrop shape creates a captivating presence perfect for special occasion jewelry or everyday statement pieces. This crystal boulder opal offers excellent value for those seeking authentic Australian gemstone quality with substantial size and vibrant color at a friendly price point.
This 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.
4.45ct Crystal Boulder Opal
AU$1,343
In stock
Details
|
Dimension: |
15.7 × 11.1 × 4.7 mm |
|
Weight: |
4.45 ct |
|
Type: |
Natural Solid Untreated Crystal Boulder Opal |
|
Source: |
Winton, QLD, Australia |
|
Sku: |
XX1901 |
This crystal boulder opal from Queensland showcases an impressive display of vibrant green and blue fire dancing across its translucent body. Bold flashes of emerald and lime green intermingle with electric blue and purple, creating a dynamic play of color that shifts dramatically with every angle of light. The teardrop shape provides an expansive canvas for the opal's natural brilliance, with concentrated bursts of color distributed throughout the stone's polished surface.
At 15.7 x 11.1 x 4.7 mm and weighing 4.45 carats, this substantial teardrop crystal boulder opal offers generous proportions ideal for statement pendant necklaces or prominent ring designs. The elegant pear shape creates a sophisticated silhouette that flatters in both modern and vintage inspired settings. This opal works beautifully in custom jewelry settings with sterling silver for bohemian designs, or can be showcased in gold for more refined fine jewelry pieces.
This completely natural and untreated solid opal retains its authentic ironstone backing, which provides structural stability while displaying the genuine character of Queensland crystal boulder opal. Not a doublet or triplet, this gemstone features the vibrant color intensity and translucency that make crystal boulder opals appealing to jewelry designers and collectors seeking distinctive stones at accessible price points. The larger size and bold color play offer exceptional visual impact.
As the official opal October birthstone, this gemstone represents hope, creativity, and inspiration. The striking green and blue palette combined with the elegant teardrop shape creates a captivating presence perfect for special occasion jewelry or everyday statement pieces. This crystal boulder opal offers excellent value for those seeking authentic Australian gemstone quality with substantial size and vibrant color at a friendly price point.
This 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