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LOT 2819
Tourmaline Crystal Mineral Display Specimen
3 3/8 in. (121 grams, 86 mm).
A large trigonal tourmaline crystal in dark pink colour. [No Reserve]
ProvenanceProperty of a North West London, UK, lady.
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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Spherical Sedimentary Concretion
Sold for (Inc. bp): £20
Naturally formed from hardened sediment with projecting porous, black stone nodules. 647 grams, 10.2 cm
Acquired on the UK art market in the 1990s. From the Dr Ince collection, N.W. London, UK.
A concretion is a compact mass of mineral matter, usually spherical or disc-shaped, and they vary greatly in size. They usually form early in the burial history of sediment, before the rest of the sediment has hardened into solid rock. Concretions occur when a considerable amount of cementing material collects locally around a nucleus, often organic (a leaf, tooth, a section of fossil or shell or dead matter) and commonly a marine invertebrate. -
Large Cut and polished Petrified Fossil Tree Trunk Specimen
Late Triassic Period, circa 225 million years B.P.Sold for (Inc. bp): £26
Cut along the grain, with good exposure of the individual grain modules, probably from Madagascar. 1.9 kg, 17 cm
From the property of a Scottish geologist. Previously with a Surrey, UK, geologist. Ex Dr Ron Bonewitz collection. Property of a Cheshire, UK, gentleman. -
Fly in Polished Amber
Pliocene Epoch, 5.33-2.58 million years B.P.Sold for (Inc. bp): £26
A dark coloured specimen containing a small fly. 0.74 grams, 14 mm
From Colombia, South America. 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.
