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
Sold2016Natural History - Copper in Matrix SpecimenAn unusual specimen of native copper in matrix from Michigan, USA, with a sawn and polished face exposing the copper, coated with an acrilic to prevent oxidation of the copper. Found Michigan, USA; frSee Sold Price
Sold2016Natural History - Gem Quality Precious Opal GroupA group of six pieces of gem-quality, white-base opal, from Australia, with red, blue, and green fire. Found Australia; from the historic ‘Victorian Museum’ collection of Gregory, Bottley & LloydSee Sold Price
Sold20232 Natural History Fossil Specimen in Stone MatrixLot of two natural specimen fossils encased in stone matrix. Measure from 1/4" - 3 3/4" in height x 4 1/4" - 5" in length. No apparent markings. Condition: Good overall condition having normal surfaceSee Sold Price
Sold2016Natural History - Spangolite Mineral Specimen.A matrix specimen with numerous small crystals of the rare mineral spangolite, in white card tray with adhesive tape label reading: 'SPANGOLITE, BINGHAM'. See http://www.mindat.org/min-3721.html 210 gSee Sold Price
Sold2016Natural History - Stibnite Mineral Specimen.A matrix specimen of radiating stibnite groups, in white card tray. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.253. 70 grams, 55mm (2"). From the historic ‘Victorian Museum��See Sold Price
Sold2017Precious Opal in Matrix Group.A group of ten specimens of dark orange opal in a matrix, each in a white card tray with label reading: 'Opal in matrix, Bocoyna, Chihuahua, Mexico'. 252 grams total, 34-46mm (1 1/4 - 1 3/4"). From aSee Sold Price
Sold20238 Wavellite Pale Green Crystals On Matrix Arkansas8 Wavellite Pale Green hemispherical crystal rocks on Matrix from Arkansas. Natural History Specimen. Waverlite. Largest 7.5" x 6.5" x 3" From the estate of Frank Hall owner of Dover Scientific and coSee 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
Sold2023Natural History - Large Polished Goniatite Fossil DisplayUpper Devonian Period, 370 million years B.P.. The freestanding textured matrix containing four specimens. 1.77 kg, 18 cm high (7 1/8 in.). Ex Cambridgeshire, UK, collection. [No Reserve]See Sold Price
Sold2015Natural History - Polished Orthoceras Fossil TowerSilurian Period, 400 million years BC. A free-standing pillar of orthoceras-rich matrix, with four specimens exposed and polished. 1.4 kg, 23cm (9"). From an important London collection, acquired in tSee 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
Sold2019Natural History Fossil Fish and Ammonite GroupCretaceous Period, 200-65 million years BP. Group comprising: a small ammonite, cut and polished in two halves, with two small fossil fish specimens, in matrix. 618 grams total, 3.2-14.7cm (1 1/4 - 5See 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
4 hrs LeftTreasure of Gems & JewelryNatural Multi Color Opal Sparkling Matrix Boulder Free Form Cabochon 3.35 Ct. Gemstone From$1
Jun 29Treasure of Gems & JewelryMulti Color Matrix Boulder Natural Opal 1.94 Ct. Free Form Cabochon Shape 8.7 x 7.4 Mm Gemstone From$1
2 days LeftClaydon Auctioneers LtdNatural History / Geology Interest: A hardstone specimen geode. Possibly Chrysocolla / Malachite /£30
3 days LeftFantasy JewelryNatural Zircon Crystals on Matrix Mineral Specimen From Skardu Pakistan - 138 Gram$40
2 days LeftClaydon Auctioneers LtdNatural History / Geology Interest: Four polished hardstone specimen eggs to include lapis lazuli,£30
4 days LeftFantasy Jewelry16.10 Grams Natural Zircon Crystal On Matrix Zircon Mineral Specimen - 25X22X15 mm$20
3 days LeftFantasy JewelryNatural Hessonite Garnet Cluster on Matrix Mineral Specimen - 278 Grams - 73X55X50 mm$80
7 days LeftKsmith Jewels Global1.69Ct Koroit Matrix Boulder Opal Polished - Australian Opal - Oval Cabochon$35
7 days LeftKsmith Jewels Global3.42Ct Koroit Matrix Boulder Opal Polished - Australian Opal - Oval Cabochon$35
7 days LeftKsmith Jewels Global3.71Ct Koroit Matrix Boulder Opal Polished - Australian Opal - Oval Cabochon$35
2 days LeftClaydon Auctioneers LtdNatural History / Geology Interest: A large polished hardstone specimen sphere. Approx. 6" diameter£30