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LOT 0405
Cathedral Geode Half with Amethyst and Calcite Crystals
13 3/4 in. (17.35 kg, 35 cm).
The cathedral lined with large deep purple amethyst crystals, white dog tooth calcite crystals emerging from the left corner; mounted on a custom-made display stand.
ProvenanceFrom Artigas, Uruguay.
Property of a London lady.
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AUCTIONS:
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LOT 0405
Cathedral Geode Half with Amethyst and Calcite Crystals
Estimate £2,500 - 3,500€2,900 - 4,060 (for guidance only)$3,380 - 4,730 (for guidance only)
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Boat-Shaped Formation of Quartz after Anhydrite
Sold for (Inc. bp): £1,820
A boat-shaped cut section of a geode with large blade-shaped white crystals of quartz after anhydrite; accompanied by a custom-made display stand. 2.6 kg total, 32 cm wide including stand
From Rio Grande do Sul, Brazil. Property of a London lady. -
Australian Meteorite Crater Tektite Specimen
Sold for (Inc. bp): £59
Pebble-like black specimen of meteoric glass of oval shape. 10.6 grams, 35 mm
From Gibber Plains, near Charlotte Waters, Australia. Ex John Kennett collection. From the M. Bandi collection, Seattle, Washington, USA. Deaccessioned from the South Australia Museum, with original collection card. From the private collection of a Leicestershire, UK, gentleman.
Tektites are lumps of black or dark grey natural glass produced from melted crustal rocks that are caused by large hypervelocity meteorite impacts on sediments. -
Polished Fossil Brachiopod
Devonian Period, circa 417-354 million years B.P.Sold for (Inc. bp): £20
A large specimen of possibly Brachiopoda articulata. 653 grams, 86 mm
From Atlas Mountains, Morocco, North Africa. Acquire Sheringham, UK, in 1999. 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.
