A shallow bowl carved from fossiliferous stones containing multiple Orthoceras sp. specimens. 183 grams, 12 cm



From Atlas Mountains, Morocco, North Africa. From a Cambridgeshire, UK, collection.

A rounded matrix with two Knightia alta fish with faint remains of another one. 62 grams, 91 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.

An exceptional display of branching coral, base cut. 206 grams, 11.8 cm



From a 19th century collection. Property of an Essex, UK, gentleman.

Comprising a Tyrannosaurus Rex coprolite. 71 grams, 51 mm



From a Lincolnshire, UK, collection.

Comprising variously sized polished pebbles of red carnelian. 620 grams total, 20-49 mm



Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

Comprising three necklaces, each composed of facetted tubular amethyst beads and ellipsoid tabular centerpiece, with floral gold-coloured spacers; restrung. 211 grams total, 52-72 cm



Ex property of a West London, UK, gentleman; his collection formed in the late 1980s-early 1990s. Property of a Californian, USA, collector.

Each colourless pebble with a cut 'window'. 1.55 kg total, 29-40 mm



Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

Diplomystus sp. in a rectangular matrix. 1.52 kg, 22 x 16 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.

A light-coloured specimen on a roughly rectangular matrix. 115 grams, 90 mm



From a Cambridgeshire, UK, collection.

Each dyed in vibrant colours, central voids with crystal formations. 1.11 kg total, 57-85 mm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

A nickel-iron meteorite (IAB). 39.3 grams, 34 mm



From a Lincolnshire, UK, collection.

A crater field of roughly 26 craters was found in the vicinity of this crater, which is estimated to date to 4-5 thousand years BP. The age of the meteorite itself is thought to be c.4.5 billion years, formed as part of the development of this solar system. The largest two fragments, the 30.8 ton Gancedo and 28.8 ton El Chaco, are among the heaviest meteorite masses ever recovered on Earth. In 1576, the governor of a province in Northern Argentina commissioned the military to search for a large mass of iron, which it was believed the local people claimed had fallen from the sky and which they used for their weapon production. The expedition discovered a large mass of metal which was assumed to be an iron mine and brought back a few samples, which were described as being of unusual purity. Following the legends, in 1774 Don Bartolomé Francisco de Maguna rediscovered the iron mass. He himself did not believe that the stone had fallen from the sky and assumed that it had formed by a volcanic eruption. However, he sent the samples to the Royal Society of London. In 1990 it became protected by law.

Pebble-like black specimens of meteoric glass of various shapes and sizes. 170 grams total, 29-47 mm



Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

Tektites are lumps of black or dark grey natural glass produced from melted crustal rocks that are caused by large hypervelocity meteorite impacts on sediments.