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![Large Cut and Polished Agate Crystal Geode Slice Collection [3]](https://timelineauctions.com/zoom_images/zoomthumb/2/2/227985_900x900.jpg "Large Cut and Polished Agate Crystal Geode Slice Collection [3]")
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![Large Cut and Polished Agate Crystal Geode Slice Collection [3]](https://timelineauctions.com/upload/images/items/227985.jpg "Large Cut and Polished Agate Crystal Geode Slice Collection [3]")
LOT 2423
Large Cut and Polished Agate Crystal Geode Slice Collection [3]
5 5/8 - 9 in. (750 grams total, 14.2-23 cm).
Comprising three large polished slices, each showing natural banding and one with quartz crystals to the centre; two dyed. [3, No Reserve]
ProvenanceFrom Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
TimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process
AUCTIONS:
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LOT 2423
Large Cut and Polished Agate Crystal Geode Slice Collection [3]
Sold for (Inc. bp): £20
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Large Fossil Tree Trunk Section
Triassic Period, circa 251-199 million years B.P.Sold for (Inc. bp): £7
Displaying dark banding to the centre with some bark detailing to the outer surfaces. 3.43 kg, 24 cm
From Madagascar. Property of an Essex, UK, gentleman. -
Polished Fossil Coral Head Heart
Devonian Period, circa 417-354 million years B.P.Sold for (Inc. bp): £20
Cut to a heart shape and polished to reveal the internal structure. 212 grams, 74 mm
From a Cambridgeshire, UK, collection. -
Knightia Fossil Fish in Matrix Group
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £33
Comprising three rounded matrices, each with a Knightia alta specimen. 145 grams total, 63-74 mm
From Wyoming (Green River Formation), USA. From a Lincolnshire, UK, collection.
In southwest Wyoming (and parts of Colorado and Utah) in the Green River Formation are found some of the world's most outstanding specimens of fossil fish. The Green River system was composed of three lakes: Lake Ulinta, Lake Gosiute and Fossil Lake. These Eocene lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiary time. The climate was much different from the desert-like climate of this area today. Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today. Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time.
