Sold2024Natural History - Historic Opal Mineral Specimen.A specimen of pale blue opal, collection number 333. 258 grams, 59 mm (2 1/4 in.). Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine CSee Sold Price
Sold2016Natural History - Precious Opal Matrix Specimen.A sawn block of red-brown sandstone, polished on two sides, with areas of precious opal diffracting light in primarily purples, blues and greens, in white card tray. See Bonewitz, Dr. Ronald Louis, RoSee Sold Price
Sold2024Natural History - Historic Opal Mineral Specimen.Displaying iridescent milk-opal in a pale creamy-brown matrix, collection number 625. 105 grams, 65 mm (2 1/2 in.). Acquired on the UK mineral and fossil market, since 1970. From the historic mineralSee Sold Price
Sold2024Natural History - Historic 'Australia' Boulder Opal Mineral Specimen.Chocolate-brown matrix with vibrant opal inclusions, collection number 411. 47.4 grams, 43 mm (1 5/8 in.). Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collectioSee Sold Price
Sold2024Natural History - Historic 'Australia' Boulder Opal Mineral Specimen.The matrix showing pale sky-blue opal, collection number 425, with an old James Walker label. 34.8 grams, 39 mm (1 1/2 in.). Acquired on the UK mineral and fossil market, since 1970. From the historicSee Sold Price
202354.5Ct Natural Australian Lightning Ridge Black Opal Specimen Rough JarDimension: 5mm-17mm 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 AustralianSee Sold Price
2023127Gram Natural Crystal Quartz Rough SpecimenDimension: 9.5x4cm 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
Sold2023457Ct Collection Of Amber Fossil Rough SpecimenDimension: 70.7x60.6mm 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
Sold202355Ct Natural Australian Lightning Ridge Black Opal Specimen Rough JarDimension: 6mm-15mm 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 AustralianSee Sold Price
202362Ct Natural Australian Lightning Ridge Black Opal Specimen Rough JarDimension: 4mm-12mm 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 AustralianSee Sold Price
Sold2023620Gram Natural Fire Agate Rough SpecimenDimension: 12x7.5cm 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 AustralianSee Sold Price
Sold202352Ct Natural Australian Lightning Ridge Black Opal Specimen Rough JarDimension: 5mm-18mm 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 AustralianSee 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
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
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
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
Sold2017Natural History - Mineral Specimen Group. A mixed group comprising: a galena block from Spain; a celestina block from Sicily; a large scalenahedral calcite crystal from Rumania; a block of cubic octahedral pyrite from Peru. 948 grams total,See Sold Price
Sold2017Natural History Mineral Specimens- 16 PiecesNatural history mineral specimens including rock crystal, rose quartz, agates, and geodes. Largest: 3" H X 33.5" W.See Sold Price
Sold2023Brazilian Carved Lapidary Sculpture of BirdsNatural history mineral specimen of toucans with gilt metal feet, perched on a rock, with stolomite, amethyst, obsidian and other stones. On black dolomite base, retailed by Amsterdam Sauer. [10 x 10See Sold Price
318 Lots AwayKsmith Jewels Global37Ct Group of 6 Rough Opal Specimen - Ethiopian Opal - Mineral Rough Set$45(1 bid)
641 Lots AwayKsmith Jewels Global39Ct Group of 7 Rough Opal Specimen - Ethiopian Opal - Mineral Rough Set$25(1 bid)
636 Lots AwayKsmith Jewels Global55Ct Group of 7 Rough Opal Specimen - Ethiopian Opal - Mineral Rough Set$35(1 bid)