Ophiuroidea sp. on an irregular matrix. 782 grams, 17.5 cm



From a Cambridgeshire, UK, collection.

A boxed group of rhomboidal, transparent specimens in labelled display trays. 785 grams total including box, 20-34 mm



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

Comprising two teeth showing good brown enamel, repaired. 67.7 grams total, 45-59 mm



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

The Mosasaur is an extinct, large marine reptile dinosaur with an elongated body, long snout and paddle-like limbs. Found worldwide, they competed with other well-known sea predators of the Late Cretaceous, such as plesiosaurs and ichthyosaurs, for food, existing primarily on a diet of ammonoids, cuttlefish and fish.

Boxed group of large pyramidal pale purple amethyst crystals. 4.15 kg total including box, 54-73 mm



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

Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished light-coloured amethyst pebbles. 385 grams, 19 cm



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

A trio of rounded geodes, each unopened. 518 grams total, 49-69 mm



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

A group of three sawn rectangular shale specimens, each displaying manganese oxide dendrites. 235 grams total, 6.4-10.8 cm



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

Comprising four bags of mini geodes showing crystal-lined cavities. 3.28 kg total, 17-50 mm



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

Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished light-coloured carnelian and agate pebbles. 373 grams, 16 cm



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

Comprising ten cut and polished halves, each showing a crystal-lined cavity. 1.23 kg total, 60-77 mm



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

A nickel-iron meteorite (IAB). 97.8 grams, 50.7 mm



From a Cambridgeshire, UK, collection.

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 199,0 it became protected by law.

A group of ten optical calcite specimens, each held in a white card collector's tray. 170 grams total, 18-22 mm

Very fine condition.

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