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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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Cut and Polished Agate Geode Slice Collection [18]
Sold for (Inc. bp): £33
Comprising eighteen polished slices displaying banding, some dyed to enhance the colour. 382 grams total, 35-85 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Mixed Polished Agate Bead Necklace
Sold for (Inc. bp): £52
A long necklace composed of multicoloured oblate and facetted agate beads with small gold-coloured metal spacers in between; Indian, also known as beggar beads. 156 grams, 104 cm
Property of a Stockport, UK, collector. -
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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.
