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LOT 2389
Two Massive Smoky Quartz Crystal Specimens
4 7/8 in. (2.38 kg total, 12.3-12.4 cm).
Comprising two specimens of large intergrown pyramidal smoky quartz crystals. [2, No Reserve]
ProvenanceFrom Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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LOT 2389
Two Massive Smoky Quartz Crystal Specimens
Estimate £30 - 40€35 - 46 (for guidance only)$41 - 54 (for guidance only)
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Fossil Insects in Matrix Collection
Cretaceous Period, circa 145-65 million years B.P.Estimate: £30 - 40 (+bp*)
Bids: 1 | Current Bid: £5
Comprising three different types of insects, one likely a locust. 90 grams total, 47-56 mm
From Brazil. 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. -
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. 38.6 kg, 84 x 38 x 17 cm, 112 cm including stand
From Artigas, Uruguay. Property of a London lady. -
Large Group of Forty-Two [42] Cleaved Optical Calcite Specimens
Estimate: £30 - 40 (+bp*)
Opening Bid: £5
Comprising forty-two calcite rhombs displaying characteristic double refraction. 1.54 kg total, 24-42 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.