2.40 ct Natural Multicolor Opal Triplet – Oval CabochonWeatherham Estate Treasures4(211)$1504 days Left
Natural Multi Color Opal Flashing Boulder 19.77 Ct. Free Form Cabochon Gemstone From AustraliaTreasure of Gems & Jewelry4.4(213)$1Feb 08, 2026
Natural Multi - Color Boulder Flashing 21.40 Ct. Free Form Cabochon Shape 31 x 16 Mm. Gemstone FromTreasure of Gems & Jewelry4.4(213)$1Feb 08, 2026
3.77 ct Fancy Cabochon Natural Multicolor Opal TripletWeatherham Estate Treasures4(211)$160Feb 18, 2026
3.60ct AFRICAN BLACK OPAL OVAL CABOCHON CUT NATURAL UNTREATED RAREModern Jewelry4.5(203)$2,400Feb 12, 2026
Natural Multi-Color Opal 2.27 Ct. Oval Cabochon Shape 10.7 x 7.5 Mm. Gemstone UnheatedTreasure of Gems & Jewelry4.4(213)$1Feb 08, 2026
Sold12.605ct Queensland Boulder Opal12.605ct Queensland free form Boulder Opal Cabochon Gemstone. Fantastic pattern, perfect size & shape for a lovely, one of a kind pendant. 22.39 X 13.4 X 4.3mm.See Sold Price
SoldGroup of 7 Polished Australian Queensland Boulder Opal 43Ct 20.3x12.4x5.4mmThousand Planet Auction House Treasure Auction Day, all major kinds of Mineral, you will find in today's auctions. Join us and add our auction into your calendar. Today auction including Artifacts, MiSee Sold Price
SoldQueensland Boulder Opal Specimen PaperweightQuantity: 1 Condition: Good Height: 5cm or approximately 1.97 inches Width: 17.5cm or approximately 6.89 inches Depth: 2.75cm or approximately 1.08 inches Weight: 382.7g or approximately 13See Sold Price
SoldGroup of 7 Polished Australian Queensland Boulder Opal 42Ct 17.8x12.4x3.5mmThousand Planet Auction House Treasure Auction Day, all major kinds of Mineral, you will find in today's auctions. Join us and add our auction into your calendar. Today auction including Artifacts, MiSee Sold Price
SoldGroup of Polished Australian Queensland Boulder Opal 85Ct 26.7x26.6x5mmThousand Planet Auction House Treasure Auction Day, all major kinds of Mineral, you will find in today's auctions. Join us and add our auction into your calendar. Today auction including Artifacts, MiSee Sold Price
SoldGroup of Polished Australian Queensland Boulder Opal 32.75Ct 59x13mmThousand Planet Auction House Treasure Auction Day, all major kinds of Mineral, you will find in today's auctions. Join us and add our auction into your calendar. Today auction including Artifacts, MiSee Sold Price
SoldGroup of Polished Australian Queensland Boulder Opal 45.7Ct 16.6x11.8x4.3mmThousand Planet Auction House Treasure Auction Day, all major kinds of Mineral, you will find in today's auctions. Join us and add our auction into your calendar. Today auction including Artifacts, MiSee Sold Price
SoldGroup of Polished Australian Queensland Boulder Opal 99.3Ct 29.8x22x7.6mmThousand Planet Auction House Treasure Auction Day, all major kinds of Mineral, you will find in today's auctions. Join us and add our auction into your calendar. Today auction including Artifacts, MiSee Sold Price
SoldGroup of 5 Polished Australian Queensland Boulder Opal 70.5Ct 27.2x20.9x4mmThousand Planet Auction House Treasure Auction Day, all major kinds of Mineral, you will find in today's auctions. Join us and add our auction into your calendar. Today auction including Artifacts, MiSee Sold Price
SoldGroup of Polished Australian Queensland Boulder Opal 55.7Ct 37.5x20.5mmThousand Planet Auction House Treasure Auction Day, all major kinds of Mineral, you will find in today's auctions. Join us and add our auction into your calendar. Today auction including Artifacts, MiSee Sold Price
Sold6.15-Carat Koroit Queensland Boulder OpalThis auction lot of 6.15-carat boulder opal from Koroit Queensland, measuring 13.2x10.8x5.3mm, exemplifies the stunning natural beauty and intricate craftsmanship associated with fine Australian opalsSee Sold Price
SoldAustralian Lightning Queensland Boulder Opal Rough JarNo reserve is set for any lot; the starting price is the basic price of the lot without reserve. We are delighted to present an extraordinary collection of jewelry and artifacts spanning various histoSee Sold Price
SoldAustralian Lightning Queensland Boulder Opal Rough JarNo reserve is set for any lot; the starting price is the basic price of the lot without reserve. We are delighted to present an extraordinary collection of jewelry and artifacts spanning various histoSee Sold Price
Sold4.2-Carat Koroit Queensland Boulder OpalThis auction lot of 4.2 carat boulder opal from Koroit Queensland, measuring 13.0 x 10.0 x 32.0 mm, exemplifies the stunning craftsmanship and cultural significance associated with opals from this renSee Sold Price
Sold6.29 Carat Koroit Queensland Boulder OpalThis auction lot of 6.29 carat boulder opal from Koroit Queensland, measuring 16.7x12.6x2.9mm, exemplifies the intricate craftsmanship and unique geological creation characteristic of Queensland's opaSee Sold Price
Sold5.35ct Koroit Queensland Boulder Opal with Color PlayThis auction lot of 5.35-carat boulder opal from Koroit Queensland, measuring 16.8x12.1x2.7mm, exemplifies the intricate and vibrant patterns distinctive to this region. The boulder opal is a masterpiSee Sold Price
Sold9.59 Carat Koroit Queensland Boulder OpalThis auction lot of 9.59-carat boulder opal from Koroit Queensland, measuring 17.4x12.7x4.0mm, exemplifies the remarkable craftsmanship and vibrant display of natural beauty typical of opals from thisSee Sold Price
SoldLot of 2 Australian Lightning Queensland Boulder Opal Rough JarsLot of 2 Australian Lightning Queensland Boulder Opal Rough JarsSee Sold Price
SoldTwo Very Fine Loose Opals with Paperwork1) Queensland boulder opal weighing 2.85 carats with brilliant green, blue and gold play of color, measures 16 x 7 mm, and 2) white opal with strong blue and green play of color measures 7.5 x 12.8 mmSee Sold Price
SoldHistoric Australian Opal Mineral SpecimenA fine specimen of Queensland boulder opal, with typical ironstone backing and rich colour; with collector's label, 1950. 11.4 grams, 38mm (1 1/2"). Previously the property of an important private minSee Sold Price
SoldGroup of 6 Queensland Winton Boulder Opal CollectionThis exquisite lot features six polished loose opal pieces from the historic Queensland Winton Boulder fields, measuring between 33-35mm. Each opal showcasing a mesmerizing play of color characteristiSee Sold Price
SoldGroup of 6 Queensland Winton Boulder Opal CollectionThis exquisite lot features six polished loose opal pieces from the historic Queensland Winton Boulder fields, measuring between 18-23mm. Each opal showcasing a mesmerizing play of color characteristiSee Sold Price
SoldGroup of 6 Queensland Winton Boulder Opal CollectionThis exquisite lot features six polished loose opal pieces from the historic Queensland Winton Boulder fields, measuring between 12-17mm. Each opal showcasing a mesmerizing play of color characteristiSee Sold Price
Australian Queensland Fossilized Boulder Opal Rough Lot - Ancient Matrix Fire in Ironstone HostThis captivating lot of fossilized Boulder Opal rough specimens hails from the opal-rich terrain of Queensland, Australia-one of the only places on Earth where this unique variety naturally occurs. EaSee Sold Price
