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LOT 2695
Cut and Polished Australian 'Thunder Egg' Agate Geode Pair
2 3/4 in. (331 grams total, 71-72 mm).
Displaying strong red and orange banding to the centre. [2, No Reserve]
ProvenanceFrom Agate Creek, Australia.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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AUCTIONS:
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LOT 2695
Cut and Polished Australian 'Thunder Egg' Agate Geode Pair
Sold for (Inc. bp): £26
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![Pyrite Crystal Chunk Group [100]](https://timelineauctions.com/upload/images/items/small/227948-s.jpg)
Pyrite Crystal Chunk Group [100]
Sold for (Inc. bp): £7
Comprising one hundred variously sized chunks. 1.41 kg total, 18-32 mm
From Peru. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
![Boxed Mixed Crystal and Mineral Specimen Collection [5]](https://timelineauctions.com/upload/images/items/small/227929-s.jpg)
Boxed Mixed Crystal and Mineral Specimen Collection [5]
Sold for (Inc. bp): £46
Comprising: a mass of amethyst and quartz crystals; a fluorite specimen; smoky quartz; azurite; fluorite with haematite; calcite with pyrite. 320 grams total, 36-58 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
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Large Rainbow-coloured Carborundum Crystal Display Specimen
Sold for (Inc. bp): £33
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.
