This 12.76ct Natural Boulder Opal from Winton, Australia is a mesmerizing polished oval that glows with layers of blue and flashes of green fire. Its long, slender silhouette offers elegance with a vibrant twist—perfect for statement pendants or unique custom rings.
✨ Features & Benefits:
✨ 100% Natural Solid Boulder Opal – Ethically sourced from Winton, Australia
✨ Blue & Green Play-of-Color – Intense blue base with green and violet speckles appearing at every turn
✨ Polished Oval Shape – Long, curved form ideal for pendant or bar-style designs
✨ Ideal Size – 12.76ct, perfect balance between visual impact and wearability
✨ October Birthstone – Ideal for milestone celebrations or opal lovers
✨ Symbol of Creativity, Love & Good Fortune – Carries both artistic energy and heartfelt meaning
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.
Blue Green Boulder Opal 12.76 ct
USD 695
Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 12.76 carats
Dimensions: 36x8x4 mm
Source: Winton, QLD, Australia
Size and weight are approximate
In stock
This 12.76ct Natural Boulder Opal from Winton, Australia is a mesmerizing polished oval that glows with layers of blue and flashes of green fire. Its long, slender silhouette offers elegance with a vibrant twist—perfect for statement pendants or unique custom rings.
✨ Features & Benefits:
✨ 100% Natural Solid Boulder Opal – Ethically sourced from Winton, Australia
✨ Blue & Green Play-of-Color – Intense blue base with green and violet speckles appearing at every turn
✨ Polished Oval Shape – Long, curved form ideal for pendant or bar-style designs
✨ Ideal Size – 12.76ct, perfect balance between visual impact and wearability
✨ October Birthstone – Ideal for milestone celebrations or opal lovers
✨ Symbol of Creativity, Love & Good Fortune – Carries both artistic energy and heartfelt meaning
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.
