Natural History - Polished Cut Malachite Slab Group

Each with one polished face to display the internal contrasting banding. 308 grams total, 22-43 mm (7/8 - 1 5/8 in.). From the People's Democratic Republic of Congo.Ex Mineral Imports, London, UK.Greg

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

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

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

A group of ten one-off polished malachite mineral specimens of good quality malachite. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.184. 119 grams total, 25-46mm (1/4 - 1 3/4"). From the

Natural malachite cut slab on stand, with incredible natural earth deposits and marbling throughout. Size approximately 9" L x 6" H

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

A group of five cut and polished amethyst obelisks or massage tools ranging in colour from light to dark purple and with rainbow reflections. From Brazil; from the historic ‘Victorian Museum’ or l

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 eight agate geode sections. 3.5 kg total, 85-96 mm (3 3/8 - 3 3/4 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [8, 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]

A group of four cut and polished agate nodule ends with bands of colour and crystalline growth. From the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); fo

A group of two cut and polished amethyst points with flat bases, a deep purple colour, and rainbow reflections. From Brazil; from the historic ‘Victorian Museum’ or later collection of Gregory, Bo

A group of cut and polished smoky quartz obelisks with rainbow reflections. From Brazil; from the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); formerly

Cretaceous Period, Albian Stage, 113-100 million years BP. A group of eight small A-grade cut and polished Cleoniceras sp. ammonites from Madagascar, with the distinctive pattern of the cross-section

Jurassic Period, 201-145 million years BP. A group of cut and polished ammonite halves revealing the inner chambers, two in old white card trays with A.B. Cotterill Collection, Wollaton, Nottingham, U

A group of six cut and polished purple agate geode sections, with exposed crystals; colour-enhanced. 1.39 kg total, 69-94 mm (2 3/4 - 3 3/4 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (

Cretaceous Period, Albian Stage, 113-100 million years BP. A group of two A-grade, cut and polished Cleoniceras sp. ammonites from Madagascar, polished through much of the shell to reveal the calcite

Cretaceous Period, 200-65 million years BP. Group comprising: a small ammonite, cut and polished in two halves, with two small fossil fish specimens, in matrix. 618 grams total, 3.2-14.7cm (1 1/4 - 5

A nodule of malachite with lustrous sheen of pale and dark green, section cut from top showing internal structure. From the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Ll

A pair of cut and polished rose quartz points of a pale pink colour with rainbow reflections. From Brazil; from the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gre

A group of twenty-seven natural geode halves with quartz crystals from Brazil, each cut with a polished face. 1037 gram total, 37-70mm (1 1/2 - 2 3/4"). From an old Lincoln Collection [27, No Reserve]

. 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,

A polished piece of beautifully figured malachite, with numerous 'eyes' exposed on the polished surface. From the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd (Gregory's); fo