Lower Jurassic Period, Toarcian Stage, circa, 180 million years B.P.. A quantity of Dactylioceras sp. specimens on an irregular matrix. 902 grams...

Carboniferous Period, circa 305 million years B.P.. Comprising fossil fern specimens on an irregular matrix together with some leaf fossils. 108 ...

Mesozoic Era, 250-65 million years B.P.. From the extinct Hybodus sp. shark, showing excellent preserved detail. 58 grams, 18 cm (7 1/8 in.). Fro...

Found Sahara 2006 A.D.. Comprising ten variously sized samples. 17.6 grams total, 15.3-19.4 mm (1/2 - 3/4 in.). Ex Adrian Contreras, Crater Meteo...

The specimen cut on one side to reveal the internal light-coloured cavity, the edges polished with dark brown and grey banding. 982 grams, 13.3 c...

Comprising four translucent spheres with some internal inclusions; supplied in cardboard specimen trays. 338 grams total, 36-40 mm (1 3/8 - 1 1/2...

Triassic Period, 251-199 million years B.P.. Comprising eight cut sections, each showing some bark detail; in labelled specimen boxes. 215 grams ...

Comprising a large quantity of dark double-terminated crystals. 96 grams total, 10-26 mm (3/8 - 1 in.). Ex Mineral Imports, London, UK.Gregory, B...

20th century A.D.. Composed of graduated coin-shaped beads, with hook-and-eye clasp. 73 grams, 43 cm long (17 in.). UK gallery, early 2000s. [No ...

Eocene Period, circa 55-33 million years B.P.. A rare unidentified agatized Dicotaledon fruit specimen. 17.7 grams, 46 mm (1 3/4 in.). From the W...

Devonian Period, circa 417-354 million years B.P.. A rectangular lidded jewellery or trinket box, polished and cut from a single block containing ...

An irregular matrix with pyrite and arsenic. 205 grams, 85 mm (3 3/8 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [...

Devonian to Jurassic Period, circa 417-145 million years B.P.. Mixed group including Perisphinctids indogermanus ammonite, Goniatite and Orthocera...

Miocene Period, circa 15 million years B.P.. A fossilised Delphinus sp. dolphin vertebrae. 62.7 grams, 10.3 cm (4 in.). From North Carolina, U.S....

White to clear in colour with a small section containing light lavender coloured crystals. 363 grams, 11.3 cm (4 3/8 in.). Ex Mineral Imports, Lo...

Comprising irregular chunks of light green beryl. 2.06 kg total, 30-57 mm (1 1/8 - 2 1/4 in.). From Brazil.Ex Mineral Imports, London, UK.Gregory...

Pleistocene Period, 2.6 million-11,700 years B.P.. Comprising four eggshell sections from Aepyornis. See Fuller, E., Extinct Birds, Oxford Univers...

Triassic Period, 251-199 million years B.P.. Displaying attractive vertical banding in green, red and black. 19.2 kg, 35 cm (13 3/4 in.). From Ma...

Jurassic Period, 199-145 million years B.P.. Comprising three matrices, each containing Promicroceras planicosta fossil ammonites. 341 grams tota...

The dark green surface formations with iron carbonate. 578 grams, 96 mm (3 3/4 in.). From Democratic Republic of the Congo.Ex Mineral Imports, Lo...

Oligocene Period, circa 45 million years B.P.. Polished to highlight the various inclusions. 6.21 grams, 40 mm (1 5/8 in.). Property of the vendo...

Pliocene Period, 5.2-2.5 million years B.P.. Carcharocles megalodon tooth displaying some good polished enamel. 198 grams, 95 mm (3 3/4 in.). Ex ...

Comprising three irregular pieces with one polished face showing the contrasting white veining. 209 grams total, 8.2-10 cm (3 1/4 - 4 in.). Ex Mi...

Late Triassic period, circa 225 million years B.P.. Cut to a freestanding shape with two polished faces. 695 grams, 12 cm (4 3/4 in.). From a Lin...

Each in a labelled specimen tray. 335 grams total, 34-36 mm (1 3/8 in.). From Peru.Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Grego...

Each with small crystals to the centre, surrounded by larger crystals forming a flower shape. 144 grams total, 47-52 mm (1 3/4 - 2 in.). From Per...

20th century A.D. or earlier. Restrung; composed of biconical lapis lazuli beads. 5.69 grams, 43 cm long (17 in.). UK gallery, early 2000s. [No R...

Devonian Period, circa 417-354 million years B.P.. Comprising two polished, dome-shaped masses, each with a central Goniatite sp. specimen. 858 g...

Jurassic Period, circa 199-145 million years B.P.. Comprising three possibly Sinosura kelheimense specimens, a pair on one matrix and the other wi...

Eocene Period, circa 56-33 million years B.P.. Comprising three Knightia alta specimens, each on a round matrix. 140 grams total, 74-82 mm (2 7/8...

Eocene Period, circa 50 million years B.P.. A rare Harpactocacinus punctatus crab on a matrix. 849 grams, 13.4 cm (5 1/4 in.). From Verona, Italy...

Devonian Period, circa 417-354 million years B.P.. A round lidded jewellery or trinket box, polished and cut from a single block containing multip...

Comprising three transparent slices showing attractive banding. 286 grams total, 9-14 cm (3 1/2 - 5 1/2 in.). Ex Mineral Imports, London, UK.Greg...

Eocene Period, circa 58 million years B.P.. Knightia alta specimen on a rectangular matrix. 273 grams, 13 cm (5 1/8 in.). From Wyoming (Green Riv...

Cretaceous Period, circa 100-95 million years B.P.. From the dinosaur Bahariasaurus ingens, with good enamel; repaired. 7.11 grams, 51 mm (2 in.)...

Middle Cambrian Period, circa 505 million years B.P.. Three Elrathia kingii specimens, each on an irregular matrices. 230 grams total, 5.8-10.3 c...

Cretaceous Period, circa 145-65 million years B.P.. From the lower jaw, displaying two teeth from Prognathodon sp.; repaired. 89 grams, 87 mm (3 ...

Entomological specimen of Eurypelma spinicrus, in glazed wooden display case. 253 grams, 15.1 x 15.1 cm (6 x 6 in.). From a collection acquired o...

Upper Devonian Period, circa 419-358 million years B.P.. A Metacanthina barrandei trilobite showing shell structure, eyes and side antenna; on a m...

Each labelled bag containing a number of mainly dark purple chunks. 689 grams total, 20-35 mm (3/4 - 1 3/8 in.). From Brazil.Ex Mineral Imports, ...

Cretaceous Period, 145-65 million years B.P.. A pair of rectangular sedimentary matrices, each containing a fossil shrimp. 139 grams total, 56-71...

Circa 100 million years B.P.. Displaying fossilised bark and tree rings in red, burgundy, orange and black. 2.5 kg, 15 cm wide (6 in.). From the ...

Pliocene Period, 5.2-2.5 million years B.P.. Displaying a later carved stylised face with exaggerated facial detailing. 112 grams, 80 mm (3 1/8 i...

Pliocene Period, 5.2-2.5 million years B.P.. Displaying a later carved stylised face with exaggerated facial detailing. 106 grams, 72 mm (2 7/8 i...

Devonian Period, circa 417-354 million years B.P. Comprising five polished Orthoceras sp. specimens. 80 grams total, 44-49 mm (1 3/4 - 1 7/8 in.)...

Comprising two large examples with old labels identifying them to be collection nos.52 and 53. 1.1 kg total, 10.8-11 cm (4 1/4 in.). From Scotlan...

Cretaceous Period, circa 145-66 million years B.P.. Comprising three overlapping Mellitella sp. ammonites on a freestanding matrix. 6.9 kg, 32 cm...

Comprising good-seized chunks of rose quartz with ferrous mineral. 2.56 kg total, 53-93 mm (2 1/8 - 3 5/8 in.). From Brazil.Ex Mineral Imports, L...

Cretaceous Period, circa 125-113 million years B.P.. Comprising two teeth with partial roots; repaired. 33 grams total, 57-62 mm (2 1/4 - 2 1/2 i...

Comprising: brown calcite from Chihuahua, Mexico; calcite from Tri-State, USA; grossular garnet from Chihuahua, Mexico; nailhead calcite from Tri-...

A free-standing section of a geode with amethyst crystals of good colour. 657 grams, 11 cm high (4 1/4 in.). From a Lincolnshire, UK, collection....

Cretaceous Period, circa 90 million years B.P.. Two front leg bone sections from the Dinosaur Deltadromeus agilis; one repaired. 389 grams total,...

Lower Jurassic Period, Pliensbachian Stage, circa 191-183 million years B.P.. A Green Ammonite Bed nodule with Androgynoceras sp. specimen. 4.7 k...

Middle Ordovician Period, circa 450 million years B.P.. Ophiuroidea sp. specimen on a matrix. 428 grams, 15.5 cm (6 1/8 in.). From El Kaid Errami...

In enhanced dark blue colour, the internal cavity with quartz crystals. 663 grams, 23 cm (9 in.). Ex Mineral Imports, London, UK.Gregory, Bottley...

Ordovician Period, circa 485-444 million years B.P.. Comprising three Petraster sp. specimens, each on a matrix. 1.3 kg total, 9-12.5 cm (3 1/2 -...

Eocene Period, circa 38 million years B.P.. Comprising two Eupatagus antillarum specimens. 317 grams total, 66-75 mm (2 5/8 - 3 in.). From Ocala ...

Pliocene Period, 5.2-2.5 million years B.P.. Triangular tooth of Carcharocles megalodon displaying some good polished enamel. 29.5 grams, 60 mm (...

Devonian Period, circa 417-354 million years B.P. Comprising three polished, dome-shaped masses, each with a central Goniatite sp. specimen. 368 ...

Comprising a number of specimens, some with marcasite inclusions. 866 grams total, 24-62 mm (1 - 2 1/2 in.). Ex Mineral Imports, London, UK.Grego...