A small ovoid geode section with deep purple amethyst crystals, polished outer face. 185 grams, 57.5 mm



From a Cambridgeshire, UK, collection.

Comprising four slabs and two end sections, each showing characteristic contrasting banding. 1.06 kg total, 83-99 mm



From the Democratic Republic of Congo, Central Africa. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

A boxed group of prismatic crystals with pyramidal terminations, some twinned. 1.92 kg total including box, 21-69 mm



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

Comprising three good-sized agatised slices, showing the internal structure of the wood. 1.61 kg total, 11.5-18.7 cm



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

A boxed group of geode sections with amethyst crystals, the colours ranging from very pale purple to dark purple. 3.51 kg total including box, 5.6-12 cm



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

A spectacular large polished sphere of lapis lazuli, polished to show its beautiful structure. 10 kg, 18 cm



Property of an Indian gentleman living in London; previously from an Indian collection. Property of a Californian, USA, collector.

A cylindrical body carved from fossiliferous stone, the lid set with a large Goniatite sp. 242 grams, 56 mm



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

A large group of light blue calcite specimens from Mexico. 1.06 kg total, 10-35 mm



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

A boxed group of emerald to light green specimens showing pearly lustre. 2.94 kg total including box, 50-85 mm



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. 625 grams, 22.5 cm



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

Restrung, using recently polished Mammuthus primigenius spherical bone beads. 197 grams, 60 cm



London, UK, collection, 2000.

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.

The tooth showing dark brown enamel, set in a sandstone matrix with a composite root for display. 562 grams, 14.5 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.