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![Group of Twenty-Two [22] Agate Crystal Geode Halves and Rock Crystal Quartz Points](https://timelineauctions.com/zoom_images/zoomthumb/2/5/255979_900x900.jpg "Group of Twenty-Two [22] Agate Crystal Geode Halves and Rock Crystal Quartz Points")
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![Group of Twenty-Two [22] Agate Crystal Geode Halves and Rock Crystal Quartz Points](https://timelineauctions.com/upload/images/items/255979.jpg "Group of Twenty-Two [22] Agate Crystal Geode Halves and Rock Crystal Quartz Points")
LOT 2443
Group of Twenty-Two [22] Agate Crystal Geode Halves and Rock Crystal Quartz Points
1 1/8 - 4 in. (1.78 kg total, 2.8-10.2 cm).
Comprising nine prismatic rock crystal points with pyramidal terminations, and thirteen agate specimens, some with crystal-lined interiors. [22, No Reserve]
ProvenanceEx Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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AUCTIONS:
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LOT 2443
Group of Twenty-Two [22] Agate Crystal Geode Halves and Rock Crystal Quartz Points
Estimate £30 - 40€35 - 46 (for guidance only)$41 - 54 (for guidance only)
Opening Bid
£5 (EUR 6; USD 7) +BP*
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Fossil Perisphinctid Ammonite
Jurassic Period, circa 174-145 million years B.P.Estimate: £20 - 30 (+bp*)
Opening Bid: £5
Perisphinctid indogermanus fossil ammonite showing clear ribbing on both sides. 154 grams, 87 mm
From a Lincolnshire, UK, collection. -
Polished 'Orca' Agate Display Piece
Estimate: £30 - 40 (+bp*)
Opening Bid: £5
Polished freestanding stone with attractive white formations against a dark background. 554 grams, 99 mm
From a Cambridgeshire, UK, collection. -
Knightia Multiple Fossil Fish Plate
Eocene Period, circa 58-36 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
An oval plate with four Knightia alta specimens. 161 grams, 13.8 cm
From Wyoming, 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 Uinta, 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.
