An intergrown mass of pink blade-like crystals, collection number '15' to one edge. 991 grams, 94 mm



From Taffs Well, South Wales, UK. Acquired from Milton Keynes Geological Society 16 January 1994. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.

Comprising four Perisphinctes sp. specimens in labelled specimen boxes. 320 grams total, 56-66 mm



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

Irregular naturally-occurring nugget with pitted surface; in a display container. 5.34 grams, 19 mm



Found Grimsby, UK. Property of an Essex, UK, gentleman.

Prismatic points of various sizes, mostly clear. 937 grams total, 29-70 mm



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

Comprising two large prismatic points, one clear and the other smoky, both with some internal inclusions. 900 grams total, 13.8-16.5 cm



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

A display comprising four polished Goniatite sp. specimens on a textured freestanding matrix. 1.47 kg, 18 cm



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

Comprising three obelisks with facetted edges. 124 grams total, 62-65 mm



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

Comprising two fragmentary specimens. 225 grams total, 77 mm each



From a Cambridgeshire, UK, collection.

Comprising variously sized light green chunks. 2.18 kg total, 37-78 mm



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

Displaying the internal structure filled with yellow and brown aragonite crystals. 232 grams, 13 cm



From Utah, USA. Acquired from Mr Parkinson, Southport, UK, 16 October 2001. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.

Each cluster displaying variously sized crystals. 860 grams total, 11-33 mm



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

Comprising different shapes and sizes, colour varying from dark green to olivine green. 76 grams total, 2-12 mm



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