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LOT 2681
Fossil Petraster Starfish Pair
ORDOVICIAN PERIOD, CIRCA 485-444 MILLION YEARS B.P.
3 1/2 - 3 7/8 in. (358 grams total, 88-98 mm).
Comprising two irregular matrices, each with Petraster sp. specimen. [2, No Reserve]
ProvenanceFrom a Cambridgeshire, UK, collection.
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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![Cut and Polished Agate Crystal Geode Half Collection [10]](https://timelineauctions.com/upload/images/items/small/227847-s.jpg)
Cut and Polished Agate Crystal Geode Half Collection [10]
Sold for (Inc. bp): £20
Each pebble cut and polished, showing banding and some with a crystal filled cavity. 1.78 kg total, 66-77 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Polished Fossil Goniatite Bookends
Devonian Period, circa 400 million years B.P.Sold for (Inc. bp): £72
Comprising two quadrilateral bookend carved from fossiliferous stone, each set with a large Goniatite sp. specimen on a textured background. 3.47 kg total, 16 cm each
From Atlas Mountains, Morocco, North Africa. From a Cambridgeshire, UK, collection. -
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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.
