Lentoid in section with transverse head, curved cutting edge. 670 grams, 14 cm



From the collection of a Hampshire, UK, gentleman, established from the 1960s.

A boxed group of unpolished ruby in zoisite specimens. 3.95 kg total including box, 16-56 mm



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. 422 grams, 16.5 cm



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

Comprising three wind-rounded pebbles in hollowed out 'nests'; each with a hessian draw-ribbon pouch. 335 grams total, 47-62 mm



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

Comprising two Onchopristus numidus sawfish rostral teeth. 16.4 grams total, 53 mm



From Whitby, Yorkshire, UK. From a Cambridgeshire, UK, collection.

Cut and polished sections, mined in Greece, cut and polished on both sides, probably recycled material mined in ancient Roman times. 221 grams total, 11.9-14.5 cm



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

Also known as Lapis Lacedaemonius and Porfido Verde Antico, a type of green porphyry quarried in Greece. Spartan basalt is a form of andesite or volcanic rock known today only from a single source in the village of Krokees on the Peloponnese in Greece. In addition, ancient sources mention a quarry of Lapis Lacedaemonius in Taygetus.

Comprising three sections with a polished cut face, each with a crystal-lined centre and showing contrasting banding. 1.57 kg total, 8.8-16 cm



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

A shallow dish carved from fossiliferous stone showing multiple Orthoceras sp. specimens. 244 grams, 12 cm



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

With a cut base and showing characteristic ribbing, possibly Calycoceras. 2 kg, 12.1 cm



From a Cambridgeshire, UK, collection.

Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished quartz pebbles. 600 grams, 17 cm



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

Comprising a Spinosaurs maroccanus and a Carcharodontosaurus saharicus tooth with some root; repaired. 15.80 grams total, 39-47 mm



Found Morocco, North Africa. Property of an Essex gallery.

The Carcharodontosaurus saharicus was one of the largest predators (larger than its distant North American T-Rex cousin) of all time and is also related to Allosaurus and the South American Giganotosaurus. The Spinosaurus was both a beachcomber type scavenger and an active hunter, taking small stranded Plesiosaurs, Pterosaurs, turtles and large fish.

Comprising a blade-shaped curving formation of transparent gypsum attached to a matrix with druzy quartz; mounted on a custom-made display stand. 629 grams total, 26.5 cm including stand



From Artigas, Uruguay. Property of a London lady.