Boulder Opal 29.45 ct
xx1370a
xx1370f
xx1370b
xx1370d
xx1370e
xx1370c
xx1370 - Copy
xx1370-1

This 29.45ct Natural Boulder Opal from Winton, Queensland, features an electrifying palette of royal blue and emerald green over a warm earthy matrix. The broad flash pattern dances across the surface, shifting under the light with vibrant intensity. Its generous size and naturally sculpted freeform shape make this a standout centerpiece for high-end jewelry or a premium collectorโ€™s piece.

โœจ Features & Benefits:
โœจ 100% Natural Solid Boulder Opal โ€“ Responsibly sourced from Winton, Australia
โœจ Vibrant Blue-Green Color Play โ€“ Broad flashes light up across polished stone
โœจ Bold Statement Size โ€“ 29.45ct of solid opal perfect for bespoke jewelry
โœจ Freeform Shape โ€“ Naturally contoured and organically beautiful
โœจ Collector's Gem โ€“ Rare size and vivid color, ideal for showcasing or investing
โœจ October Birthstone โ€“ Symbolic of hope, creativity, and emotional clarity
โœจ Eligible for Payment Plan โ€“ Flexible option for designers and collectors

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.

Add to Wishlist

29.45ct Natural Boulder Opal Large

USD $1,115

100% Natural Boulder Opal
Weight: 29.45 ct
Dimensions: 34×16.5×6 mm
Source: Winton, QLD, Australia

This Opal is eligible to purchase on a Payment Plan

In stock

SKU: XX1370

This 29.45ct Natural Boulder Opal from Winton, Queensland, features an electrifying palette of royal blue and emerald green over a warm earthy matrix. The broad flash pattern dances across the surface, shifting under the light with vibrant intensity. Its generous size and naturally sculpted freeform shape make this a standout centerpiece for high-end jewelry or a premium collectorโ€™s piece.

โœจ Features & Benefits:
โœจ 100% Natural Solid Boulder Opal โ€“ Responsibly sourced from Winton, Australia
โœจ Vibrant Blue-Green Color Play โ€“ Broad flashes light up across polished stone
โœจ Bold Statement Size โ€“ 29.45ct of solid opal perfect for bespoke jewelry
โœจ Freeform Shape โ€“ Naturally contoured and organically beautiful
โœจ Collector's Gem โ€“ Rare size and vivid color, ideal for showcasing or investing
โœจ October Birthstone โ€“ Symbolic of hope, creativity, and emotional clarity
โœจ Eligible for Payment Plan โ€“ Flexible option for designers and collectors

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.

You May Also Like
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