Wood Fossil Boulder Opal Specimen 91.5  ct
Wood Fossil Boulder Opal Specimen 91.5  ct
Wood Fossil Boulder Opal Specimen 91.5  ct

Celestial Fossil Prism โ€“ Rainbow Stardust Within Time

This 91.5ct Boulder Opal Specimen from Winton is a natural wonderโ€”an ancient wood replacement fossil glowing with a rare spectrum of rainbow flash. Its captivating lattice-like structure and gem-grade polish highlight the natural fossilization of wood with vibrant blue, green, red, and golden flash. A collector's dream with unmatched beauty and storytelling depth.

โญ Features & Benefits:
โœจ Natural Solid Opal Specimen โ€“ Fossilized wood replacement from Winton, Australia
โœจ Rainbow Flash Fire โ€“ Vivid multicolor shimmer with gem-like sparkle all over
โœจ Specimen Collector Grade โ€“ Rare fossil opal with high display and investment value
โœจ 91.5ct Size โ€“ Large and impactful for a statement pendant, collectorโ€™s showcase, or high-end design
โœจ October Birthstone โ€“ A powerful and symbolic gemstone for collectors and artists alike

Boulder Opal Wood Fossil Replacement (often just called Wood Replacement Boulder Opal) is a type of natural opal that forms when silica-rich water slowly replaces the organic material of ancient wood, molecule by molecule, over millions of years. This rare process fossilizes the wood structure while filling it with vibrant opal.

๐Ÿ”น Key Features:

  • Natural Opal Replacement: The wood is entirely replaced by opal, not just coated.

  • Preserved Wood Texture: You can often see wood grain, rings, or organic textures.

  • Vibrant Play-of-Color: Commonly displays electric blues, greens, or even rare reds and purples.

  • Natural Formation: No two pieces are alikeโ€”each one tells a geological story from millions of years ago.

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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91.5ct Solid Boulder Opal Specimen – Wood Replacement

USD 7,700

Natural Solid Untreated Australian Boulder Opal Polished Specimen
Weight: 91.5 carats
Dimensions: 67x31x7 mm
Source: Winton, QLD, Australia
Size and weight are approximate
The face of this opal is undulated

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: DD92

Celestial Fossil Prism โ€“ Rainbow Stardust Within Time

This 91.5ct Boulder Opal Specimen from Winton is a natural wonderโ€”an ancient wood replacement fossil glowing with a rare spectrum of rainbow flash. Its captivating lattice-like structure and gem-grade polish highlight the natural fossilization of wood with vibrant blue, green, red, and golden flash. A collector's dream with unmatched beauty and storytelling depth.

โญ Features & Benefits:
โœจ Natural Solid Opal Specimen โ€“ Fossilized wood replacement from Winton, Australia
โœจ Rainbow Flash Fire โ€“ Vivid multicolor shimmer with gem-like sparkle all over
โœจ Specimen Collector Grade โ€“ Rare fossil opal with high display and investment value
โœจ 91.5ct Size โ€“ Large and impactful for a statement pendant, collectorโ€™s showcase, or high-end design
โœจ October Birthstone โ€“ A powerful and symbolic gemstone for collectors and artists alike

Boulder Opal Wood Fossil Replacement (often just called Wood Replacement Boulder Opal) is a type of natural opal that forms when silica-rich water slowly replaces the organic material of ancient wood, molecule by molecule, over millions of years. This rare process fossilizes the wood structure while filling it with vibrant opal.

๐Ÿ”น Key Features:

  • Natural Opal Replacement: The wood is entirely replaced by opal, not just coated.

  • Preserved Wood Texture: You can often see wood grain, rings, or organic textures.

  • Vibrant Play-of-Color: Commonly displays electric blues, greens, or even rare reds and purples.

  • Natural Formation: No two pieces are alikeโ€”each one tells a geological story from millions of years ago.

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.