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LOT 2299
Amethyst Crystal Geode Display
CIRCA 120-140 MILLION YEARS B.P.
10 1/4 x 8 5/8 x 4, 12 1/2 in. (10.65 kg, 26 x 22 x 10 cm, 32 cm including stand).
Polished section of a geode lined with large, deep purple amethyst crystals in flower-like formations; 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 2299
Amethyst Crystal Geode Display
Estimate £1,200 - 1,700€1,390 - 1,970 (for guidance only)$1,620 - 2,300 (for guidance only)
Opening Bid
£650 (EUR 754; USD 878) +BP*
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![Group of Ten [10] Cut and Polished Agate Geode Slices](https://timelineauctions.com/upload/images/items/small/256012-s.jpg)
Group of Ten [10] Cut and Polished Agate Geode Slices
Estimate: £20 - 30 (+bp*)
Opening Bid: £5
Attractive group of polished translucent slices showing contrasting bands, two showing quartz crystal formations, and with dendritic inclusions and four with horizontal banding. 795 grams total, 9.2-12.7 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Fossil Tylosaurus Marine Dinosaur Vertebra
Late Cretaceous Period, circa 92-66 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
The main body of a vertebra with two raised ridges underneath, likely a pygal or caudal vertebra; old inked collector's number 'VR26'. 622 grams, 96 mm
From near Harlan County Dam, Nebraska, USA. 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.
Tylosaurus was an apex marine predator during the Late Cretaceous period, and is classified in the superfamily Mosasauroidea. -
Carcharodontosaurus North African 'T-Rex' Fossil Dinosaur Tooth
Cretaceous Period, circa 110 million years B.P.Estimate: £50 - 70 (+bp*)
Opening Bid: £5
From Carcharodontosaurus saharicus, displaying some serrations. 15.4 grams, 47 mm
From a Cambridgeshire, UK, collection.
The Carcharodontosaurus saharicus was one of the largest predators (larger than its distant North American T-Rex cousin) of all time and is also related to Allosaurus and the South American Giganotosaurus.
