Comprising: amethyst 'porcupine' from Rio Grande do Sul, Brazil; pyrite from Huanuco, Peru; crystalline malachite from D.R. Congo; sphalerite on pyrite from Huanuco, Peru. 578 grams total, 46-68 mm



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

Comprising twenty irregular unpolished specimens. 3.74 kg total, 50-92 mm



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

Comprising twenty specimens with polished faces displaying attractive banding and 'eye' formations, some pierced, one with a small heart-shaped opening. 210 grams total, 19-38 mm



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

Comprising one hundred irregular specimens with typical sharp edges. 1.13 kg total, 32-47 mm



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

A montage of ten fossil Otodus obliquus shark teeth, set recently on a matrix slab for display. 4.55 kg, 24.5 cm



From a Cambridgeshire, UK, collection.

Showing the pair of horn-like spines behind the glabellum, specific for Dicranurus monstrosus odontopleurid trilobites; some restoration. 666 grams, 12.8 cm



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

Comprising thirteen polished teardrop-shaped buttons formed from fossiliferous stone containing Orthoceras specimens. 173 grams total, 42-59 mm



From Morocco, West Africa. Ex Norfolk, UK, collection.

Comprising two teeth with some good enamel, one repaired. 54 grams total, 46 mm each



From Morocco, West Africa. Ex 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.

Restrung group of fusiform and other types with interstitial rosettes. 33.55 grams, 45.2 cm



London, UK, collection, 2000s.

Comprising three cut geode sections lined with amethyst crystals, two with grey bands of agate beneath the crystal layer. 1.46 kg total, 12.8-14.8 cm



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

Comprising ten partially polished slices showing banding and 'eye' formations. 547 grams total, 6.9-12.4 cm



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

Comprising variously sized polished Orthoceras sp. specimens on a textured freestanding matrix. 903 grams, 21 cm



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