Comprising one hundred geode halves, most displaying a crystal filled cavity. 618 grams total, 21-42 mm



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

From a small theropod, showing clearly the three toes and footpad; pencilled note to the reverse. 658 grams, 12.5 cm



From South Wales, 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 two cut geode sections, each with large prismatic amethyst crystals. 1 kg total, 88-92 mm



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

Each a naturally formed 'flower' with smaller inner crystals and larger crystals to the edges. 355 grams total, 50-64 mm



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

A freestanding display, polished to enhance the mimicking patterns and colours of an orca. 628 grams, 12.6 cm



From Madagascar. From a Cambridgeshire, UK, collection.

A large group of variously sized pebbles. 1.2 kg total, 20-41 mm



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

Two irregular matrices containing dawn redwood fossils, showing twig and needle leaves. 82 grams total, 56-59 mm



From the Muddy Creek Formation, Beaverhead County, Montana, USA. From a Lincolnshire, UK, collection.

Comprising variously sized chunks in vibrant orange colour. 1.15 kg total, 24-51 mm



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

A selection of variously sized geode halves, each with an exposed internal cavity. 833 grams total, 37-77 mm



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

A cut freestanding section showing attractive agatized patterns and some bark detail to the outer edge. 826 grams, 10.8 cm



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

Comprising fifty cut sections with satin-like sheen to the surfaces. 607 grams total, 52-68 mm



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

A nickel-iron meteorite fragment, set in a cardboard sleeve. 2.22 grams total, 14 mm



From Odessa, Texas, USA. Acquired from Rod White, UK, 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.

The Odessa Meteor Crater, southwest of Odessa, Texas, is approximately 5 metres deep and 170 metres in diameter, with its rim rising less than a meter above the surrounding area, with the original crater that formed approximately 20,000 years ago was determined to be much larger.