Showing good detail to the body and spines, on a matrix. 116 grams, 78 mm



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

Comprising six cut halves, each with an exposed internal cavity, two freestanding with cut base. 1.61 kg total, 6-10 cm



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

Including quartz, amethyst, red jasper, rose quartz, obsidian, and others. 2.17 kg total, 7.3-10.7 cm



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

With cut base, possibly Calycoceras. 1.09 kg, 11.7 cm



Ex Cambridgeshire, UK, collection.

Comprising three Perisphinctes sp. ammonites, each in a labelled specimen tray. 385 grams total, 71-75 mm



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

Domed body with high polish, showing the internal structure. 406 grams, 96 mm



From a Cambridgeshire, UK, collection.

Restrung group of carnelian fusiform beads with twist detailing, melon bead centrepiece. 53 grams, 50 cm



London, UK, collection, 2000s.

Comprising three specimens; repaired. 307 grams total, 6.5-10.1 cm



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

A Carcharocles megalodon shark tooth, with serrations and good polished tooth enamel. 63 grams, 83 mm



Found Wrightsville Beach, North Carolina. Ex The Fossil Exchange. From a private Tyneside collection, formed since the early 2000s. Accompanied by a Fossil Exchange information card.

Carcharodon megalodon is regarded as one of the largest and most powerful marine predators in vertebrate history and likely had a profound impact on structuring of the marine communities. Fossil remains indicate that this giant shark reached a length of more than 16 metres (52 ft) and also affirm that it had a cosmopolitan distribution. Scientists suggest that in life it looked like a stockier version of the great white shark, Carcharodon carcharias.

An end section of a geode with the inner cavity lined with quartz crystals. 4.7 kg, 21 cm



From the private collection of author and historian Dr DeWitt Bailey, one of the global authorities on the confederate army in the US civil war; thence by descent to his grandson.

Restrung using recently polished Mammuthus primigenius bone beads. 129 grams, 58.5 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 fifty specimens with test cuts. 2.38 kg total, 25-82 mm



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