A trio of rounded geode halves, each with a large exposed internal crystal-filled cavity, one with a large single clear crystal. 662 grams total, 74-83 mm



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

Comprising three Knightia alta specimens. 438 grams, 12 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.

Dark blue polished pebbles with white veining. 450 grams total, 15-26 mm



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

Comprising unpolished tourmaline crystals with quartz and mica, including an amethyst crystal. 178 grams total, 11-37 mm



Ex property of a UK gallery, early 2000s.

Comprising three specimens; repaired. 185 grams total, 64-76 mm



From a Lincolnshire, UK, collection.

On a light coloured amethyst geode matrix; the metal branches tipped with polished darker amethyst pebbles. 380 grams, 15.5 cm



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

An irregular sandstone matrix set with a Mosasaur prognathodon sp. and an Otodus obliquus sp. teeth and other fossils. 301 grams, 10 cm



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

The Mosasaur is an extinct, large marine reptile dinosaur with an elongated body, long snout and paddle-like limbs. Found worldwide, they competed with other well-known sea predators of the Late Cretaceous, such as plesiosaurs and ichthyosaurs, for food, existing primarily on a diet of ammonoids, cuttlefish and fish.

A mortality plate showing a cluster of Flexicalymene sp. trilobites. 2.53 kg, 27 cm



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

A large quantity of dark brown specimens with contrasting areas. 1.24 kg total, 31-50 mm



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

A complete agate cut in two halves and both with polished cut face, showing contrasting banding in salmon pink, blue, grey and purple colours. 1.46 kg total, 11.9 cm each



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

Each with a polished face showing mainly brown and grey banding, three with brilliant white areas. 1.68 kg total, 52-69 mm



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

Comprising: volcanic ash from Borrowdale, Cumberland; hornblende from Sutherland; granite-aplite from Devon; and luxullianite; three with old labels. 2 kg total, 10.3-11.4 cm



Found at various sites in the UK. Ex Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.