Comprising five clusters, each with multiple clear prismatic crystals. 350 grams total, 50-70 mm



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

On an amethyst geode matrix; the metal branches tipped with polished aventurine pebbles. 640 grams, 20.5 cm



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

Two large domed structures with polished upper face showing the internal structure of a coral head. 578 grams total, 8.5-11.4 cm



From a Cambridgeshire, UK, collection.

Each crystal cluster specimen in a labelled box. 580 grams total, 46-50 mm



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

Possibly Pseudostacus hakeliensis on a rectangular matrix. 1.3 kg, 26.7 x 18.5 cm



From Lebanon. From a Lincolnshire, UK, collection.

Displaying attractive pink and cream layering; set in a box frame with information label. 936 grams total, 33 x 24.2 cm including frame



From Chedworth, Gloucestershire, UK. 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 ten uncut sections. 38 grams total, 18-38 mm



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

A nickel-iron meteorite (IAB). 40.7 grams, 45 mm



From Chacoa, Argentina. Acquired from Friars Square market, Aylesbury, UK, December 2012. 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.

A crater field of roughly 26 craters was found in the vicinity of this crater, which is estimated to date to 4-5 thousand years BP. The age of the meteorite itself is thought to be c.4.5 billion years, formed as part of the development of this solar system. The largest two fragments, the 30.8 ton Gancedo and 28.8 ton El Chaco, are among the heaviest meteorite masses ever recovered on Earth. In 1576, the governor of a province in Northern Argentina commissioned the military to search for a large mass of iron, which it was believed the local people claimed had fallen from the sky and which they used for their weapon production. The expedition discovered a large mass of metal which was assumed to be an iron mine and brought back a few samples, which were described as being of unusual purity. Following the legends, in 1774 Don Bartolomé Francisco de Maguna rediscovered the iron mass. He himself did not believe that the stone had fallen from the sky and assumed that it had formed by a volcanic eruption. However, he sent the samples to the Royal Society of London. In 1990 it became protected by law.

Comprising six graduated slices displaying dark coloured banding. 352 grams total, 77-90 mm



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

Comprising two large and several small intergrown cuboid crystals. 138 grams, 55 mm



From Armejun, Spain. 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.

From Mammuthus Primigenius showing curvature and the inside structure. 502 grams, 37.5 cm



From Latton Gravels, Wiltshire, UK. Acquired from Milton Keynes Geological Society in 1999. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; with collection no.VM99; his collection of antiquities and natural history was formed since 1948; thence by descent.

Each with at least one polished face to reveal the attractive banding; some pierced for threading. 304 grams total, 24-42 mm



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