A circular composite plate composed of overlapping Cleoniceras sp. ammonites. 669 grams, 23 cm



Ex Lincolnshire, UK, collection.

Comprising a Mosasaur prognathodon tooth with some root; repaired. 105 grams, 10.5 cm



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

Comprising twenty roughly cut geode sections, each with well-formed purple amethyst crystals. 1.65 kg total, 40-69 mm



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

Comprising three rounded geodes. 415 grams total, 46-76 mm



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

Group of four irregular pieces of obsidian with pitted surfaces. 88 grams total, 31-69 mm



From the collection of G.M.R.H., London, UK.

Comprising egg-shaped specimens of fossilised coral, orange alabaster and one in white material with a hole to the base, and an agate sphere. 878 grams total, 60-65 mm



Burwell collection, Cambridgeshire, UK.

Restrung using recently polished Mammuthus primigenius bone beads. 130 grams, 57 cm



London, UK, collection, 2000s.

The mammoth lineage branched from the Asian elephant around 6 million years ago, and later on the Woolly Mammoth, Mammuthus primigenius, evolved in eastern Siberia. Woolly mammoths, being slightly smaller than living African elephants, were foragers and ate grass, as well as small, nutritious flowering plants that flourished in the environment where they lived. They may also have used their curved tusks to dig through snow and eat plants that other foragers were unable to reach.

Comprising two specimens of small intergrown crystals. 1.09 kg total, 8.9-10.2 cm



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

A rectangular matrix with three Carpopenaeus sp. specimens. 283 grams, 13 cm



Ex Lincolnshire, UK, collection.

On an amethyst geode matrix; the metal branches tipped with polished light-coloured aventurine pebbles. 603 grams, 17 cm



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

Comprising one hundred specimens of intergrown crystals. 632 grams total, 10-27 mm



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

Comprising: a large geode half lined with light purple amethyst crystals; a medium geode half with grey banding and quartz crystals; an opened small geode with brown calcite formations and acicular black crystals on light purple crystals. 1.58 kg total, 8.2-12.7 cm



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