Natural History - Polished Septarian Slab.

Found June 1967 A.D. A highly polished rectangular slice of the Seymchan meteorite with an exceptional number of transparent olivine inclusions, repaired. See Graham, A.L., Bevan, A.W.R. & Hutchison,

Large group of cut and polished rocks and geode slabs. Sizes range from 2" to 9".

A fine 16 mm thick natural agate slab with a crystalline initial layer with a white agate central layer and a hollow filled with lilac amethyst, with two old, unreadable paper labels. From the histori

Septarian Slab (Polished) UT 8oz

. Comprising: anhydrate drilled core from Bahrain; an iridescent blue bornite; a rectangular cut wulfenite specimen; drilled calcite core; a polished red jasper slab found near Dunnotar Castle beach,

Devonian Period, 417-354 million years BP. A rectangular stone block displaying orthoceras fossils, polished on all six faces. 8 kg, 30 x 7 x 14cm (11 3/4 x 2 3/4 x 5 1/2"). Property of a London gentl

A large polished boulder of labradorite from Madagascar, with rich colour play on most faces, principally blues and golds. 2.99 kg, 18cm (7") From Madagascar; from the historic ‘Victorian Museum’

Jurassic Period, circa 199-145 million years B.P. A composite plate containing a large number of variously sized ammonites, polished upper face. 835 grams, 24.7 cm (9 3/4 in.). From Madagascar. From a

A serpentine block with wheel-turned pharos model above. 426 grams, 15cm (6"). Property of a North West London gentleman; formerly with a central London gallery in 1990.

Jurassic Period, 199-145 million years B.P. Comprising a composite of various sized ammonites with polished upper surface. 778 grams, 23 cm wide (9 in.). From Madagascar. From a Lincolnshire, UK, coll

A group of six cut and polished circular malachite coasters with pale and dark green banding. From the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); form

A sawn and polished pair of natural agate geodes with several 'eyes' and cavities filled with amethyst crystals, with stands. From the historic ‘Victorian Museum’ collection of Gregory, Bottley &

Each with at least one polished face to reveal the attractive banding; some pierced for threading. 244 grams total, 17-46 mm (5/8 - 1 3/4 in.). From Democratic Republic of the Congo.Ex Mineral Imports

Devonian Period, circa 417-354 million years B.P. Footed chalice with a wide bowl; fossil inclusions. 309 grams, 10.9 cm (4 1/4 in.). From a collection acquired on the UK art market from various aucti

A mixed group of 50 polished mineral 'pebbles'. 1.12 kg total, 31-45 mm (1 1/4 - 1 3/4 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [50, No Reserve]

Cretaceous Period, circa 113-100 million years B.P. Polished to reveal the internal suture lines, some iridescence to the centre. 188 grams, 93 mm (3 5/8 in.). From Madagascar. From a Lincolnshire, UK

A large piece of cut and polished malachite with lustrous sheen of pale and dark green, pale crystals between nodules. From the historic ‘Victorian Museum’ or later collection of Gregory, Bottley

Oligocene Period, circa 45 million years B.P. A polished specimen of amber displaying insect inclusions. 0.9 grams, 19 mm (3/4 in.). Property of a Sussex, UK, teacher. [No Reserve]

POLISHED SEPTARIAN SLAB SET - (E20) 2.4 LBS. Height: 6 in. by Width: 3.5 in. by Depth: .5 in.

A group of six polished gemstone eggs including: marble, jasper, fossiliferous limestone, etc. From the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); for

Oligocene Period, circa 45 million years B.P. A polished specimen of amber displaying insect inclusions; Primorskoje mine, Kaliningrad. 6.83 grams, 27 mm (1 in.). From the Baltic Sea Coast, Primorskoj

Devonian Period, circa 417-354 million years B.P. A large sized freestanding textured matrix with two Goniatite sp. specimens and a single Orthoceras sp. specimen. 896 grams, 26.4 cm (10 3/8 in.). Fro

POLISHED SEPTARIAN SLAB SET - 2.4 LB Height: 6 in. by Width: 4 in. by Depth: 1 in.

A mixed group of 50 polished mineral specimens of various types, including haematite, quartz, red jasper, unakite, angelite, and others. 1.19 kg total, 27-44 mm (1 - 1 3/4 in.). Mineral Imports, Londo