Ancient Art, Antiquities, Books, Natural History & Coins

Transparent polished specimen with an unidentified inclusion. 0.98 grams, 22 mm



From a Lincolnshire, UK, collection.

Perisphinctids indogermanus fossil ammonite showing clear ribbing on both sides. 806 grams, 13.2 cm



From a Cambridgeshire, UK, collection.

Boxed group of light to dark purple amethyst crystal specimens, including some on matrix. 1.95 kg total including box, 16-66 mm



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

A thick slice of agatised wood showing dark brown and reddish brown colours, with some bark detailing on the outside. 2.36 kg, 30.5 cm



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

Knightia alta fish on a rounded limestone matrix. 172 grams, 14 cm



From a Cambridgeshire, UK, collection.

In southwest Wyoming (and parts of Colorado and Utah) in the Green River Formation are found some of the world's most outstanding specimens of fossil fish. The Green River system was composed of three lakes: Lake Ulinta, Lake Gosiute and Fossil Lake. These Eocene lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiary time. The climate was much different from the desert-like climate of this area today. Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today. Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time.

Boxed group of specimens including a hexagonal ruby crystal, pyrite, fluorite, smoky quartz, rock crystal, calcite with sphalerite from Tri-State in USA, amethyst from Uruguay, phantom quartz from Minas Gerais in Brazil, and others. 1.8 kg total, 1.5-13 mm



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

A boxed group of pyrite clusters, some showing larger cubic crystals. 4.41 kg total including box, 24-59 mm



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

Comprising ten translucent slices of agate showing attractive banding, one a moss agate slice. 666 grams total, 8.1-13.2 cm



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

With a cut base and showing characteristic ribbing, possibly Calycoceras. 1.58 kg, 13 cm



From a Cambridgeshire, UK, collection.

Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished light-coloured citrine pebbles. 510 grams, 20 cm



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

Boxed group of light to dark purple amethyst crystals on a matrix, one with crystals formed around a stalagmite. 2.78 kg total including box, 5.1-13 cm



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

A group of three cut and polished amethyst obelisks; held in a white card collector's tray. 200 grams total, 65-98 mm

Very fine condition.

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