Natural History - Polished Fossilised Wood Slice

Late Triassic Period, circa 225 million years B.P.. With two cut and polished faces. 344 grams, 13.5 cm (5 3/8 in.). From a Lincolnshire, UK, collection. [No Reserve]

Triassic Period, 250-200 million years BP. A large slice of polished fossilised wood from Madagascar. 848 grams, 22cm (8 3/4"). Property of a Lincolnshire, UK, gentleman; acquired on the UK art market

Triassic Period, 250-200 million years BP. A polished slice of fossilised wood from Madagascar. 311 grams, 14cm (5 1/2"). From an old Bristol paleontological collection, acquired 1950s-1960s. [No Rese

A group of ten fossil branch sections of varying length and thickness. 1.2 kg total, 6.3-10.7 cm (2 1/2 - 4 1/4 in.). From Madagascar. Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's).

Triassic Period, 250-200 million years BP. A large section of fossilised wood with one side polished from Madagascar, with some fine detail. 1.3 kg, 11cm (4 1/4"). From an old Bristol paleontological

Triassic Period, 250-200 million years BP. A cut and polished section of fossilised tree from Madagascar, with some fine detail. 1.5 kg, 14.5cm (5 3/4"). From an old Bristol paleontological collection

Triassic, 220 million years BP. A slice of petrified wood from Madagascar; accompanied by descriptive label. 85 grams, 32mm (3 1/4"). Property of a London collector; acquired London, 1980s. [No Reserv

Comprising lacquered porphyry slice of irregular shape, cut and polished on one side, probably recycled material mined in ancient Roman times between the 1st and 5th century A.D. 917 grams, 28 cm (11

Triassic Period, 252-201 million years BP. A fine slice of polished fossilised wood showing growth rings and bark texture. 395 grams, 14cm (5 1/2"). From a historic ‘Victorian Museum’ collection;

A group of six cut and polished agate geode slices; colour-enhanced. 322 grams total, 8.8-10.7 cm (3 1/2 - 4 1/4 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [6, No Reserve]

A group of six polished agate geode slices; colour-enhanced. 396 grams total, 8.7-11.8 cm (3 3/8 - 4 5/8 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [6, No Reserve]

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.Gregory, Bottley & Lloyd (Gregory's). [3, No Reserve]

Six Natural History SpecimensGroup of six various natural history specimens: four petrified wood pieces, stromatolite slice and orthoceras plaque; L: 11 3/4" (longest)

A large pink agate crystal slice, polished on both faces; colour-enhanced. 484 grams, 23.5 cm (9 1/4 in.). From Antigas, Uraguay.Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [No R

Found 2022 A.D. The cut and polished slice held in a custom-made collector's display box. 51 grams total, 84 mm wide including case (3 3/8 in.). From the Sahara Desert, North Africa. Property of a Sus

A fine, polished slice of rhodonite with a classic mix of red and black. From the historic ‘Victorian Museum’ and later collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gregory, Bottle

. With enhanced pink-colour and also showing translucent to opaque quartz crystals. 539 grams, 23.2 cm (9 1/8 in.). Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). [No Reserve]

A fine slice of natural banded agate with numerous colour bands, and with fine bands producing a rainbow effect, the hollow centre lined with quartz crystals. See Bonewitz, Dr. Ronald Louis, Rocks & M

Natural petrified wood slice with bark totally mineralized as well - shows growth rings of the tree and is millions of years old. -about 8 inches across and 5/8 inches thick - apricot orange beige col

A group of three highly-polished pallasite meteorite slices, all triangular in section, showing numerous olivine inclusions in a base of iron-nickel. 38 grams total, 45mm average (1 3/4"). Property of

Miocene Period, 20 million years BP. A section of petrified wood, one side polished to show colours and structure. 1.43 kg, 26cm (10 1/4"). Property of a Kent, UK collector; acquired UK market, 1970-2

20th century AD. A mixed pair of polished stones comprising: a petrified wood ovoid in grey and brown showing original wood grain, on a stand with three scrolled legs; a large dark iridescent obsidian

A sawn slice of zoisite containing a hundred or more opaque ruby crystals, polished on one side. From the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd (Gregory's); formerly G

Jurassic Period, 199-145 million years BP. A sawn and polished section of a fossil wood (petrified wood) log from Patagonia retaining some original grain, in old white card tray with old Gregory, Bott