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_900x900.jpg "Large Rainbow-coloured Carborundum Crystal Display Specimen")
_200x200.jpg "Large Rainbow-coloured Carborundum Crystal Display Specimen")
.jpg "Large Rainbow-coloured Carborundum Crystal Display Specimen")
LOT 2845
Large Rainbow-coloured Carborundum Crystal Display Specimen
6 1/4 in. (1 kg, 16 cm).
A large cluster of silicon carbide showing beautiful iridescence. [No Reserve]
ProvenanceFrom the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
FootnotesCarborundum rarely occurs in nature, but is commercially formed by heating carbon and silicon at very high temperatures, producing extremely strong bands of crystals.
CONDITIONTimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process
AUCTIONS:
TimeLine is a leading auction house specialising in antiquities, ancient art, collectables, natural history, coins, medals, and books. Our auctions offer museums, collectors, historians, and enthusiasts the opportunity to acquire unique and historically significant pieces.
LOT 2845
Large Rainbow-coloured Carborundum Crystal Display Specimen
Sold for (Inc. bp): £33
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Large Deep Purple Amethyst Crystal Point Group [5]
Sold for (Inc. bp): £33
Comprising five pyramidal points. 1 kg total, 47-83 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Large Quartz Crystal Geode Slab
Sold for (Inc. bp): £13
A teardrop-shaped geode section with quartz crystals with dark inclusions. 596 grams, 19.5 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Fossil Bos Species Fossil Horn Core
Pleistocene Period, 40,000-20,000 B.P.Sold for (Inc. bp): £46
Comprising the curved tip of a horn, possibly from aurochs, an extinct species of bovine. 550 grams, 16.5 cm
From Worcester Terrace Gravels, Eckington, Worcestershire, UK. Acquired from Milton Keynes Geological Society in 1999. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; with collection no.VM91; his collection of antiquities and natural history was formed since 1948; thence by descent.
