25.66ct Natural Boulder Opal Polished Cut with Collector Grade Blue Green Fire from Winton, Australia โ€“ Ideal for Ring, Pendant, or Investment Jewelry
Boulder Opal 25.66 ct Beautiful Blue Green Fire Boulder Opal. 100% Natural Solid Untreated Genuine Boulder Opal Loose Stone From Winton, Queensland, Australia. Freeform Shape, Well Polished Smooth Surface.
Boulder Opal 25.66 ct Beautiful Blue Green Fire Boulder Opal. 100% Natural Solid Untreated Genuine Boulder Opal Loose Stone From Winton, Queensland, Australia. Freeform Shape, Well Polished Smooth Surface.
Boulder Opal 25.66 ct Beautiful Blue Green Fire Boulder Opal. 100% Natural Solid Untreated Genuine Boulder Opal Loose Stone From Winton, Queensland, Australia. Freeform Shape, Well Polished Smooth Surface.
Boulder Opal 25.66 ct Beautiful Blue Green Fire Boulder Opal. 100% Natural Solid Untreated Genuine Boulder Opal Loose Stone From Winton, Queensland, Australia. Freeform Shape, Well Polished Smooth Surface.
Boulder Opal 25.66 ct Beautiful Blue Green Fire Boulder Opal. 100% Natural Solid Untreated Genuine Boulder Opal Loose Stone From Winton, Queensland, Australia. Freeform Shape, Well Polished Smooth Surface.

25.66ct Natural Boulder Opal โ€“ Aurora Eclipse Flame

This premium 25.66ct Boulder Opal from Winton showcases an exquisite blend of luminous green and oceanic blue fire in a broad polished cut. With its collector-grade quality and glowing color movement, this piece is not only a showstopper for custom jewelry but a rare investment-worthy gemstone destined for high-end creations or exclusive collections.

โญ Features & Benefits:
โœจ Natural Solid Boulder Opal โ€“ 100% untreated and sourced from Winton, Australia
โœจ Collector Grade Opal โ€“ Intense brightness and rare fire pattern across the whole surface
โœจ Blue Green Fire โ€“ Luminous interplay of electric hues, ideal for statement pieces
โœจ Polished Broad Cut โ€“ Exceptional shape for premium pendant, ring, or luxury jewelry design
โœจ 25.66ct Size โ€“ Significant weight and presence for long-term investment and heirloom value
โœจ October Birthstone โ€“ Symbolic gemstone with timeless beauty and universal appeal

Check more Ocean Blue Opal Collection.
Watch more opals on our YouTube Channel

About Boulder Opals

Boulder Opal is a beautiful type of precious opal that is unique to Queensland, Australia. Boulder Opal is usually found in Ironstone, but sometimes found in sandstone which is referred to as Pipe Boulder Opal or Crystal Opal. Boulder opal is popularly used in pendant necklace designs, as well as in rings by jewelers around the world. Read more here about boulder opals

Please be aware that slight color variations in our opals may occur due to differences in screen configurations.

Registered Shipping $15 under $200
Free Registered Shipping over $201
Free Worldwide EMS Express Shipping over $1000
Free Worldwide FedEx Shipping over $6500
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $100 FedEx Shipping Upgrade under $6499

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.

Australian Opals do not change their appearance after exposure to heat / climate / humidity / water.
An Australian Opal will not be damaged when exposed to light chemicals such as dishwashing detergent or hand soap. You should not however expose your opal to hasher chemicals such as bleach or ammonia.
They are however susceptible to cracking if knocked hard enough. If wearing your opal set in a ring you should always be careful that it is not knocked during physical activities.
If undertaking some form of sport or manual labour, please take off your ring or other opal jewelry so that it is not damaged.

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25.66ct Natural Boulder Opal Blue Green Fire

AU$10,756

100 % Natural Solid Boulder Opal Polished Stone
Weight: 25.66 ct
Dimensions: 31x20x5 mm
Source: Winton, QLD, Australia
Size and weight are approximate

Save 5% with International Bank Transfer

This Opal is eligible to purchase on a Payment Plan

To purchase this opal please enquire with us first

SKU: DD196

25.66ct Natural Boulder Opal โ€“ Aurora Eclipse Flame

This premium 25.66ct Boulder Opal from Winton showcases an exquisite blend of luminous green and oceanic blue fire in a broad polished cut. With its collector-grade quality and glowing color movement, this piece is not only a showstopper for custom jewelry but a rare investment-worthy gemstone destined for high-end creations or exclusive collections.

โญ Features & Benefits:
โœจ Natural Solid Boulder Opal โ€“ 100% untreated and sourced from Winton, Australia
โœจ Collector Grade Opal โ€“ Intense brightness and rare fire pattern across the whole surface
โœจ Blue Green Fire โ€“ Luminous interplay of electric hues, ideal for statement pieces
โœจ Polished Broad Cut โ€“ Exceptional shape for premium pendant, ring, or luxury jewelry design
โœจ 25.66ct Size โ€“ Significant weight and presence for long-term investment and heirloom value
โœจ October Birthstone โ€“ Symbolic gemstone with timeless beauty and universal appeal

Check more Ocean Blue Opal Collection.
Watch more opals on our YouTube Channel

About Boulder Opals

Boulder Opal is a beautiful type of precious opal that is unique to Queensland, Australia. Boulder Opal is usually found in Ironstone, but sometimes found in sandstone which is referred to as Pipe Boulder Opal or Crystal Opal. Boulder opal is popularly used in pendant necklace designs, as well as in rings by jewelers around the world. Read more here about boulder opals

Please be aware that slight color variations in our opals may occur due to differences in screen configurations.

Registered Shipping $15 under $200
Free Registered Shipping over $201
Free Worldwide EMS Express Shipping over $1000
Free Worldwide FedEx Shipping over $6500
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $100 FedEx Shipping Upgrade under $6499

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.

Australian Opals do not change their appearance after exposure to heat / climate / humidity / water.
An Australian Opal will not be damaged when exposed to light chemicals such as dishwashing detergent or hand soap. You should not however expose your opal to hasher chemicals such as bleach or ammonia.
They are however susceptible to cracking if knocked hard enough. If wearing your opal set in a ring you should always be careful that it is not knocked during physical activities.
If undertaking some form of sport or manual labour, please take off your ring or other opal jewelry so that it is not damaged.

Recently Viewed
Reviews
29.21ct Natural Boulder Opal
29.21ct Natural Boulder Opal
May 4 2025
This is a beautiful opal. Iโ€™m very happy with my purchase. Highly recommended seller

Lewis
2.1 ct Natural Boulder Opal
2.1 ct Natural Boulder Opal
Feb 27, 2025
So beautiful, looks just like the pictures. Iโ€™ll be back for more.

Kaitlyn
Gem Neon Green Blue Boulder Opal 12.8 ct
Gem Neon Green Blue Boulder Opal 12.8 ct
Apr 27, 2024
Exactly as pictured. Can't wait to get it set! Thanks

elegantdebra
51.96 ct Large Blue Oval Boulder Opal
51.96 ct Large Blue Oval Boulder Opal
Dec 6, 2023
Very good service and nice opals

Bob
Metallic Neon Fire Gem Boulder Opal 4.43 ct
Metallic Neon Fire Gem Boulder Opal 4.43 ct
Aug 31, 2023
The opal is just like the pictures (in the right light, of course -- that's just the nature of opal), and the description was accurate. I think the price was fair, the stone was wrapped securely and presented well, and it got here from Australia with no problem. This seems like a good shop to me!

Kate
Top Gem Multi Color Fire Boulder Opal Set 3.38 ctw
Top Gem Multi Color Fire Boulder Opal Set 3.38 ctw
May 3, 2023
What an incredible opal for my collection... wow. Can't thank you enough!!! :)

Julia Schwind
Neon Bright Metallic Multi Color Fire Absolute Gem Boulder Opal 2.27 ct
Neon Bright Metallic Multi Color Fire Absolute Gem Boulder Opal 2.27 ct
Apr 7, 2023
A lovely very bright opal. Thank you very much.

brent
Amazing Sparkling Green Blue Veins Boulder Opal 8.54 ct
Amazing Sparkling Green Blue Veins Boulder Opal 8.54 ct
Mar 8, 2023
As always a dream! As always, you get what you see in the pictures. As always, I stand by the window with my new piece and let the sunlight dance on it. For hours.

Cornelia
Neon Rainbow Strips Top Gem Australian Boulder Opal 23.9 ct
Neon Rainbow Strips Top Gem Australian Boulder Opal 23.9 ct
Feb 27, 2023
Lovely opal again!! Thanks and have a good day.

Brent
Gem Chaff Pattern Flash Rectangle Crystal Boulder Opal 2.91 ct
Gem Chaff Pattern Flash Rectangle Crystal Boulder Opal 2.91 ct
Feb 4, 2023
The Opal is so pretty and thank you for the gift of the amethyst too!

Debbie
Gem Rainbow Fire Boulder Opal 2.75 ct
Gem Rainbow Fire Boulder Opal 2.75 ct
Nov 7, 2022
I purchased it from Japan. Since the owner was also Japan people, we were able to communicate with him in the Japanese, and he answered questions before purchasing, so I was able to wait for the arrival with peace of mind. In addition, it arrived earlier than originally planned and was carefully packed. Opal is also satisfied with the very beautiful quality almost exactly as pictured! Thank you again if you have any transactions.

Saki