Home > Auctions > 4 - 9 March 2025
Ancient Art, Antiquities, Books, Natural History & Coins
![Cut and Polished Green Agate Geode Slice Group [100]](https://timelineauctions.com/upload/images/items/small/227943-s.jpg "Cut and Polished Green Agate Geode Slice Group [100]")
Each with two polished faces, some translucent. 731 grams total, 35-59 mm
From Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
From Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
.jpg "Large Rainbow-coloured Carborundum Crystal Display Specimen")
A large cluster of silicon carbide showing beautiful iridescence. 1 kg, 16 cm
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
Carborundum rarely occurs in nature, but is commercially formed by heating carbon and silicon at very high temperatures, producing extremely strong bands of crystals.
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
Carborundum rarely occurs in nature, but is commercially formed by heating carbon and silicon at very high temperatures, producing extremely strong bands of crystals.
![Purple Amethyst Crystal Obelisk and Massager Group [3]](https://timelineauctions.com/upload/images/items/small/227888-s.jpg "Purple Amethyst Crystal Obelisk and Massager Group [3]")
Comprising three graduated obelisks, two with facetted edges, one hexagonal. 110 grams total, 6.2-10 cm
From Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
From Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
![Sulphur Mineral Specimen Group [50]](https://timelineauctions.com/upload/images/items/small/227872-s.jpg "Sulphur Mineral Specimen Group [50]")
Displaying vivid lemon yellow colour. 1.1 kg total, 38-55 mm
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
Sold for (Inc. bp): £98
Showing a number of Horodyskia williamsii macrofossil imprints; information sticker to reverse with inked collector's note 'Pingandy Station'. 174 grams, 79 mm
Found Pingandy Station, Western Australia.
From a Leicestershire, UK, collection.
Previously described informally as a ‘string of beads’, assigned to the genus Horodyskia, and is considered one of the oldest known eukaryotes.
Found Pingandy Station, Western Australia.
From a Leicestershire, UK, collection.
Previously described informally as a ‘string of beads’, assigned to the genus Horodyskia, and is considered one of the oldest known eukaryotes.
Sold for (Inc. bp): £910
A large, curving section of Mammuthus primigenius tusk, showing the internal layering; stabilised. 5.46 kg, 79 cm
From the North Sea.
Acquired from Milton Keynes Geological Society in 1999.
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
From the North Sea.
Acquired from Milton Keynes Geological Society in 1999.
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
![Large Desert Rose Gypsum Specimen Group [15]](https://timelineauctions.com/upload/images/items/small/227885-s.jpg "Large Desert Rose Gypsum Specimen Group [15]")
Comprising fifteen rounded clusters of flattened crystals. 1.19 kg total, 47-62 mm
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
Sold for (Inc. bp): £33
Mammuthus primigenius tusk section. 112 grams, 10.8 cm
From the North Sea, UK.
Ian Wilkinson collection, Nottinghamshire, UK, formed since 1985.
From the North Sea, UK.
Ian Wilkinson collection, Nottinghamshire, UK, formed since 1985.
![Polished Mixed Jasper Mineral Specimen Group [51]](https://timelineauctions.com/upload/images/items/small/227907-s.jpg "Polished Mixed Jasper Mineral Specimen Group [51]")
A mixed group of red and leopard's skin jasper pebbles. 457 grams total, 19-42 mm
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
.jpg "Polished Fossil Orthoceras Bowl")
Sold for (Inc. bp): £33
A shallow bowl carved from fossiliferous stone, showing a section of a large Orthoceras sp. specimen. 218 grams, 12 cm
From a Cambridgeshire, UK, collection.
From a Cambridgeshire, UK, collection.
![Cut and Polished Agate Crystal Geode Half Collection [6]](https://timelineauctions.com/upload/images/items/small/227837-s.jpg "Cut and Polished Agate Crystal Geode Half Collection [6]")
Comprising variously sized geode halves, one with quartz crystal clusters and another with amethyst crystals to the exposed internal cavity. 1.13 kg total, 50-86 mm
From Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
From Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
A mixed group of variously shaped and sized crystals and fragments. 898 grams total, 1-20 mm
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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2401 - 2412 of 3546 LOTS
2401 - 2412 of 3546 LOTS
