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LOT 2757
Amethyst Crystal Display with Calcite
14 1/2 in. (12.8 kg total, 37 cm including stand).
Rounded section of a geode with polished edges lined with light purple amethyst crystals; light yellow calcite to the centre with a smaller calcite to the side, both with drusy quartz; 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 2757
Amethyst Crystal Display with Calcite
Estimate £1,500 - 2,000€1,740 - 2,320 (for guidance only)$2,030 - 2,700 (for guidance only)
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Fossil Flexicalymene Trilobite Group
Ordovician Period, circa 510-445 million years B.P.Sold for (Inc. bp): £286
A freestanding sandstone matrix with several fossilised trilobites. 3.3 kg, 24 cm
From Morocco, North Africa. From a Cambridgeshire, UK, collection. -
Fossil Knightia Multi Fish Plate
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £72
Knightia alta fish on a rounded limestone matrix. 364 grams, 16.4 cm
From a Cambridgeshire, 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. -
Bismuth Crystal Specimen
Sold for (Inc. bp): £26
Cluster of hopper crystals exhibiting a stairstep crystal structure and iridescent colours. 20.5 grams, 45.4 mm
From a Cambridgeshire, UK, collection.
