This 10.58ct Natural Boulder Opal from Winton, Australia showcases a rich, deep indigo body tone with intricate violet and cobalt-blue flashes. Its freeform triangular shape and raw ironstone inclusions lend an organic beauty, emphasizing its authenticity and unrefined charm. A perfect addition to custom jewelry for collectors or creatives looking for something bold and rare.
✨ Features & Benefits:
✨ 100% Natural Boulder Opal – Responsibly sourced from Winton, QLD
✨ Deep Blue-Violet Body – Velvety flashes of intense color
✨ Raw Character – Earthy ironstone textures for a natural statement
✨ One-of-a-Kind Shape – Unique triangular cut with polished surface
✨ October Birthstone – A meaningful piece for opal enthusiasts
✨ Ideal for Artistic Jewelry – Great for statement pendants or keepsakes
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 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.
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.
10.58 ct Natural Boulder Opal
USD 175
Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 10.58 carats
Dimensions: 21.5×17.5×4 mm
Source: Winton, QLD, Australia
Size and weight are approximate
In stock
This 10.58ct Natural Boulder Opal from Winton, Australia showcases a rich, deep indigo body tone with intricate violet and cobalt-blue flashes. Its freeform triangular shape and raw ironstone inclusions lend an organic beauty, emphasizing its authenticity and unrefined charm. A perfect addition to custom jewelry for collectors or creatives looking for something bold and rare.
✨ Features & Benefits:
✨ 100% Natural Boulder Opal – Responsibly sourced from Winton, QLD
✨ Deep Blue-Violet Body – Velvety flashes of intense color
✨ Raw Character – Earthy ironstone textures for a natural statement
✨ One-of-a-Kind Shape – Unique triangular cut with polished surface
✨ October Birthstone – A meaningful piece for opal enthusiasts
✨ Ideal for Artistic Jewelry – Great for statement pendants or keepsakes
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 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.
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.
