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1. Koroit Boulder Opal Rough Material from Queensland, Australia - Ro2383

   Boulder Opal from Koroit, central Queensland. Region : Koroit, Queensland. Material : Rough boulder opal. Cut / Shape : Rough. Colour : Multi-Coloured.

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2. Boulder Opal Rough Material from Koroit, Queensland, Australia - Ro3271

   A single piece of Boulder Opal from Koroit, Queensland. Region : Koroit, Queensland. Material : Rough boulder opal. Gemstone : Boulder Opal. Cut / Shape : Rough. Colour : Multi-Coloured. Country of Origin : Australia.

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3. Boulder Opal Rough Material from Koroit, Queensland, Australia - Ro3290

   A single piece of Boulder Opal from Koroit, Queensland. Region : Koroit, Queensland. Material : Rough boulder opal. Gemstone : Boulder Opal. Cut / Shape : Rough. Colour : Multi-Coloured. Country of Origin : Australia.

   eBay

4. Boulder Opal Rough Material from Koroit, Queensland, Australia - Ro3285

   A single piece of Boulder Opal from Koroit, Queensland. Region : Koroit, Queensland. Material : Rough boulder opal. Gemstone : Boulder Opal. Cut / Shape : Rough. Colour : Multi-Coloured. Country of Origin : Australia.

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5. Australian Koroit Boulder OPAL Chips JAR #34

   See video for full effect. Photos have not been enhanced or edited. Opals are best showcased in direct sunlight.

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6. Boulder Opal Rough Material from Koroit, Queensland, Australia - Ro2826

   Boulder Opal from Koroit, Queensland. This boulder from Koroit has been sawn to reveal a wonderful book leaf pattern. Region : Koroit, Queensland. Material : Rough boulder opal. Cut / Shape : Rough.

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7. Boulder Opal Rough Material from Koroit, Queensland, Australia - Ro3277

   A single piece of Boulder Opal from Koroit, Queensland. Region : Koroit, Queensland. Material : Rough boulder opal. Gemstone : Boulder Opal. Cut / Shape : Rough. Colour : Multi-Coloured. Country of Origin : Australia.

   eBay

8. Yowah Boulder Opal, Koroit, Australian, Rough Lapidary Rub, 228.00ct VIDEO

   This remarkable piece showcases colorful nut formations, adding a touch of natural beauty to this substantial 228.00ct loose gemstone. As a natural Australian Boulder Opal, this gemstone has not been enhanced and maintains its opaque transparency.

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