On a rectangular matrix, showing good detail, especially on the fins. 411 grams, 21.2 cm



From a Cambridgeshire, UK, collection.

Comprising ten geode halves with internal cavities, most with crystal lining. 1.43 kg total, 52-94 mm



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

A pair of Perisphinctes sp. ammonite specimens; each on a display tray with an old Gregory, Bottley & Lloyd label. 312 grams total, 78-83 mm



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

A translucent geode slice showing banding on the outer edge and a crystal-lined centre, dyed. 703 grams, 32 cm



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

An irregular slab of amethyst 'chevrons'. 176 grams, 12 cm



From a Cambridgeshire, UK, collection.

Showing the characteristic long snout, long genal spines, long pleural spines, and bulbous cephalon. 865 grams, 15.3 cm



From a Cambridgeshire, UK, collection.

Boxed group of amethyst geode sections in various sizes, showing well-formed light purple crystals. 2.65 kg total including box, 18-52 mm



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

A group of twenty selenite wands with pearly lustre. 460 grams total, 53-74 mm

Fine condition.

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

A Knightia alta fish on a rectangular limestone matrix with remains of another one on the reverse. 453 grams, 17.8 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.

Comprising an intergrown mass of pyrite crystals from Peru and a specimen of pyrite and quartz crystals on galena; each on a labelled specimen tray. 573 grams total, 54-74 mm



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

Composed of spherical lapis lazuli beads interspersed with barley twist beads and a large melon bead at the centre; restrung. 57 grams, 50 cm



Ex London, UK, art market 1990s.

Boxed group of colourless quartz specimens, in lined and labelled specimen trays. 677 grams total including box, 41-67 mm



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