Sold2021Cts. 33.70 Australian Boulder Opal SpecimenDimensions: 23x18x14 mm; Weight: 33.70 Cts. Photos in wet condition. Boulder opal is a unique gem that contains pieces of the hostrock it grew from, along with precious opal. Some opals are attached tSee Sold Price
Sold2021Cts 15.25 Natural Australian Boulder Opal -25x13x5mmMineral : Natural Australian Boulder OpalDimensions: mm 25x13x5 Weight: Cts. 15.25 Origin (Region/ City):Quilpie, QLD, Origin (Country):Australia The Yowah opal field located in Queensland Australia iSee Sold Price
Sold2021Cts 45.60 Natural Australian Boulder Opal - 35x18x8 mmMineral Form: Natural Australian OpalSee Sold Price
Sold2021Cts 53.40 Natural Australian Boulder Opal - 30x26x6 mmMineral : Natural Australian Boulder Opal Dimensions:30x26x6 mm Weight:53.40 Cts Origin (Region/ City):, Queensland Origin (Country): Australia Pictures taken with high resolution camera on differSee Sold Price
Sold2021Cts. 40.25 Natural Australian Boulder Opal -Mineral: Natural Australian Boulder Opal Dimensions:27x20x9 Weight:40.25 cts. Origin(Region/City):Queensland Origin(Country):Australia Pictures taken with high resolution camera on different backgrounSee Sold Price
Sold202474Ct Wood Replacement Fossil Australian Polished Boulder Opal Rough SpecimensDimension: 16 x 14 x 13 mmSee Sold Price
Sold202336.4Ct Natural Australian Koroit Yowah Boulder Opal Rough Specimen30x24x11mm Weight: 36.4CtSee Sold Price
Sold202380.43Ct Natural Australian Koroit Yowah Boulder Opal Rough Specimens23x18x12mm Weight: 80.43CtSee Sold Price
Sold2023302.5Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 35x26mm Natural History of Australian Opal & Mineral Auction by Thousand Planet Auction House featuring the beauty of Boulder Opal art in cabochon cutting and rough, well known Australian LSee Sold Price
Sold202371.88Ct Natural Australian Koroit Yowah Boulder Opal Rough Specimens26x16x8mm Weight: 71.88CtSee Sold Price
2023187Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 22x15mm Natural History of Australian Opal & Mineral Auction by Thousand Planet Auction House featuring the beauty of Boulder Opal art in cabochon cutting and rough, well known Australian LSee Sold Price
Sold202441Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 16 x 14 x 9 mmSee Sold Price
Sold2023204.5Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 21x18mm Natural History of Australian Opal & Mineral Auction by Thousand Planet Auction House featuring the beauty of Boulder Opal art in cabochon cutting and rough, well known Australian LSee Sold Price
2023630Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 91.6x46.2mm Natural History of Australian Opal & Mineral Auction by Thousand Planet Auction House featuring the beauty of Boulder Opal art in cabochon cutting and rough, well known AustraliSee Sold Price
2023441Ct Natural Australian Koroit Yowah Boulder Opal Rough Specimens20x21cm Weight: 441 grams (Before Packing) Thousand Planet Auction House Season 4: Ten2Go August Collection Auction. A bargain hunter's, fixer-upper's, and pack-rat's dream come true! Our Ten2Go "wareSee Sold Price
Sold2023406Ct Natural Australian Koroit Yowah Boulder Opal Rough Specimens26x12cm Weight: 406 grams (Before Packing) Thousand Planet Auction House Season 4: Ten2Go August Collection Auction. A bargain hunter's, fixer-upper's, and pack-rat's dream come true! Our Ten2Go "wareSee Sold Price
Sold2023475Ct Natural Australian Koroit Yowah Boulder Opal Rough Specimens22x14cm Weight: 475 grams (Before Packing) Thousand Planet Auction House Season 4: Ten2Go August Collection Auction. A bargain hunter's, fixer-upper's, and pack-rat's dream come true! Our Ten2Go "wareSee Sold Price
Sold2023211.5Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 24x22mm Natural History of Australian Opal & Mineral Auction by Thousand Planet Auction House featuring the beauty of Boulder Opal art in cabochon cutting and rough, well known Australian LSee Sold Price
Sold2023235Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 24x20mm Natural History of Australian Opal & Mineral Auction by Thousand Planet Auction House featuring the beauty of Boulder Opal art in cabochon cutting and rough, well known Australian LSee Sold Price
Sold2023217.5Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 25x16mm Natural History of Australian Opal & Mineral Auction by Thousand Planet Auction House featuring the beauty of Boulder Opal art in cabochon cutting and rough, well known Australian LSee Sold Price
Sold2023209.5Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 27x18mm Natural History of Australian Opal & Mineral Auction by Thousand Planet Auction House featuring the beauty of Boulder Opal art in cabochon cutting and rough, well known Australian LSee Sold Price
2023592Ct Natural Australian Koroit Yowah Boulder Opal Rough SpecimensDimension: 51.6x47.3mm Natural History of Australian Opal & Mineral Auction by Thousand Planet Auction House featuring the beauty of Boulder Opal art in cabochon cutting and rough, well known AustraliSee Sold Price
Sold2023491Ct Natural Australian Koroit Yowah Boulder Opal Rough Specimens26x15cm Weight: 491 grams (Before Packing) Thousand Planet Auction House Season 4: Ten2Go August Collection Auction. A bargain hunter's, fixer-upper's, and pack-rat's dream come true! Our Ten2Go "wareSee Sold Price
Sold2023300Ct Natural Australian Koroit Yowah Boulder Opal Rough Specimens25x18mm Weight: 300 grams (Before Packing) Thousand Planet Auction House Season 4: Ten2Go August Collection Auction. A bargain hunter's, fixer-upper's, and pack-rat's dream come true! Our Ten2Go "wareSee Sold Price
4 days LeftThousand Planet Auction HouseLot of 3 Exquisite Boulder Opals from Winton Mine, Queensland, Australia$5
3 days LeftTreasure of Gems & JewelryNatural Multi Color Flashing Boulder Opal 31.58 Ct. Free Form Cabochon Shape 37 x 23 Mm. Gemstone$1
May 24Treasure of Gems & JewelryNatural Multi-Color Flashing Boulder Opal 24.17 Ct. Free Form Cabochon Gemstone$1
May 24Treasure of Gems & JewelryNatural Unheated Multi Color Swan Opal Boulder Carving 21.67 Ct. Gemstone From Australia$1
7 days LeftElmwood'sAN OPAL AUSTRALIA BROOCH designed as the outline of Australia, set to the centre with a fancy shaped£900
7 days LeftHannam's Auctioneers LtdA collection of silver gemstone rings including Boulder Opal. 38 grams. O to S. (qty)£10
6 hrs LeftGolden Gate AuctioneerJennifer Meyer 18K Yellow Gold Diamond Blue Boulder Opal Evil Eye Pendant Necklace$3,900