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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:
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LOT 2845
Large Rainbow-coloured Carborundum Crystal Display Specimen
Sold for (Inc. bp): £33
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Boxed Pyrite Crystal Display Collection [6]
Sold for (Inc. bp): £33
Each crystal cluster specimen in a labelled box. 580 grams total, 46-50 mm
From Peru. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Historic Opal Mineral Specimen
Sold for (Inc. bp): £59
A specimen of pale blue opal, collection number 333. 258 grams, 59 mm
Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Accompanied by an original historic index file card. -
Otodus Fossil Shark Tooth in Frame
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £286
A large Otodus obliquus tooth in a display frame. 67 grams total, 12.5 cm including stand
From Germany. From a Cambridgeshire, UK, collection.