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LOT 2527
Stromatolite Specimen
4 3/4 in. (853 grams, 11.9 cm).
Comprising two intergrown egg-shaped mounds, produced by the activity of ancient cyanobacteria, the sediment layers visible on the underside. [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.
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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Fossil Hammatoceras Ammonite
Jurassic Period, circa 183-176 million years B.P.Sold for (Inc. bp): £85
Large Hammatoceras insigne specimen showing the characteristic discoidal form with strong ribbing. 750 grams, 16.1 cm
From Toarcian Caluados, France. 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. -
Post Medieval Blue Glass Bead Necklace String
20th century A.D.Sold for (Inc. bp): £7
Composed of spherical, melon, and other beads, central feature a facetted biconical bead; restrung. 30 grams, 36.5 cm
From the London, UK, art market in the 1990s. -
Group of Three [3] Quartz and Amethyst Crystal Sections
Sold for (Inc. bp): £7
Comprising three irregular specimens with small prismatic crystals. 1.57 kg total, 14-16 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.