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![Natural History - Medium Quartz Rock Crystal Specimen Group [12]](https://timelineauctions.com/zoom_images/zoomthumb/2/1/211364_900x900.jpg "Natural History - Medium Quartz Rock Crystal Specimen Group [12]")
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LOT 2500
Natural History - Medium Quartz Rock Crystal Specimen Group [12]
2 - 3 3/8 in. (1.15 kg total, 51-85 mm).
Comprising various quartz crystal samples, mainly larger prismatic forms. [12, No Reserve]
ProvenanceFrom Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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:
TimeLine is a leading auction house specialising in antiquities, ancient art, collectables, natural history, coins, medals, and books. Our auctions offer museums, collectors, historians, and enthusiasts the opportunity to acquire unique and historically significant pieces.
LOT 2500
Natural History - Medium Quartz Rock Crystal Specimen Group [12]
Sold for (Inc. bp): £13
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![Natural History - Large Brown Calcite Mineral Specimens [12]](https://timelineauctions.com/upload/images/items/small/211328-s.jpg)
Natural History - Large Brown Calcite Mineral Specimens [12]
Sold for (Inc. bp): £7
Comprising twelve large specimens with pearly lustre. 2.24 kg total, 6.8-10.5 cm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Knightia Fossil Fish
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £46
Knightia alta specimen on a rectangular matrix. 397 grams, 13.3 cm
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. -
Natural History - Polished Fossil Coral Heads
Devonian Period, circa 350 million years B.P.Sold for (Inc. bp): £7
Polished on all faces to an irregular oval shape, showing the structure of the coral. 296 grams, 79 mm
From a Cambridgeshire, UK, collection.
