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LOT 2614
Deep Purple Amethyst Crystal Mineral Specimens [20]
1 3/4 - 2 5/8 in. (1.88 kg total, 44-67 mm).
Comprising large chunks of geodes with clusters of amethyst and quartz crystals. [20, No Reserve]
ProvenanceFrom Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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AUCTIONS:
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Pyrite Crystal Mineral Group [100]
Sold for (Inc. bp): £7
Each cluster displaying variously sized crystals. 860 grams total, 11-33 mm
From Peru. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
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. -
Fossil Whale Ear Bone
Miocene Period, Choptank Formation, circa 23-5.3 million years B.P.Sold for (Inc. bp): £59
Tympanic bone from the inner ear of a whale. 153 grams, 86 mm
From Westmore Park, Virginia, USA. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; with collection no.VM20; his collection of antiquities and natural history was formed since 1948; thence by descent.