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LOT 2364
Polished Amethyst Crystal Geode Display with Calcite
CIRCA 140-120 MILLION YEARS B.P.
10 5/8 x 7 7/8 x 4 in. (5.68 kg, 27 x 20 x 10 cm).
The outer layer of green celadonite beautifully polished, the interior with dark purple prismatic amethyst crystals, and at the top, an aggregate of white rhombohedral calcite crystals; 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 2364
Polished Amethyst Crystal Geode Display with Calcite
Estimate £1,000 - 1,400€1,160 - 1,620 (for guidance only)$1,350 - 1,890 (for guidance only)
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Large Deep Purple Amethyst Cathedral Display
Circa 140-120 million years B.P.Estimate: £2,000 - 3,000 (+bp*)
Opening Bid: £1,100
A complete half of a pyramidal geode, showing deep purple amethyst crystals with tan-coloured druzy quartz; mounted on a custom-made display stand. 40.65 kg, 84 x 38 x 17 cm, 112 cm including stand
From Artigas, Uruguay. Property of a London lady. -
Fossil Iguanadon Dinosaur Vertebra
Early Cretaceous Period, circa 126-122 million years B.P.Sold for (Inc. bp): £20
Caudal vertebra with an elongated body. 880 grams, 94 mm
From Wealden, Bedfordshire, UK. 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.
Iguanadon was a large herbivore with a distinctive thumb-spike and long prehensile fifth fingers that helped with foraging for food. It was the second dinosaur to be formally named based on fossil specimens, and was one of the three genera originally used to define dinosauria. -
Citrine Gem Tree on Amethyst Crystal Geode Section
Sold for (Inc. bp): £20
Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished light-coloured citrine pebbles. 505 grams, 16 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
