Vibrant pink boulder of microcrystalline rose quartz. 4.13 kg, 18 cm



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

Comprising three rectangular matrices, each with a Carpopenaeus sp. specimen, one dendritic. 447 grams total, 84-89 mm



From a Cambridgeshire, UK, collection.

Restrung, using recently polished Mammuthus primigenius spherical bone beads. 138 grams, 62 cm long



From an old Lincolnshire, UK, collection. Property of a West Northamptonshire, UK, gentleman.

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.

A boxed group of specimens of lemon-yellow crystals on a matrix in various sizes. 1.84 kg total including box, 25-66 mm



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

Comprising twenty transparent to translucent slices, some with a crystalline centre, four dyed. 560 grams total, 5.5-10.8 cm



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

A graduated set of highly polished slices, each showing brown to beige banding, four showing nearly straight colour bands. 865 grams total, 11-13.8 cm



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

A Carcharocles megalodon shark tooth, with serrations and polished tooth enamel. 155 grams, 10.2 cm



From a Cambridgeshire, UK, collection.

Carcharodon megalodon is regarded as one of the largest and most powerful marine predators in vertebrate history and likely had a profound impact on the 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.

A group of grossular garnet mineral specimens; held in a white card collector's tray. 314 grams total, 20-42 mm

Fine condition.

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

Each with a polished cut face and showing a crystal-lined centre; mostly dyed. 1.47 kg total, 60-84 mm



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

Comprising: a circular slice with light grey to cream banding with colourless quartz crystals; an irregular slice with brown banding and pale purple and colourless amethyst and quartz crystals; an irregular slice with dark grey to light grey banding. 930 grams total, 17-29 cm



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

Comprising twenty translucent polished slices, some showing crystalline areas, some dyed. 415 grams total, 5-11.9 cm



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

Comprising three specimens; repaired. 256 grams total, 74-85 mm



From a Cambridgeshire, UK, collection.