Natural History Quartz Specimen Group

A group of 50 quartz crystal specimens including clear examples with points. 1.67 kg total, 27-87 mm (1 - 3 3/8 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [50, No Reserve]

Group of five richly coloured pieces of rose quartz, from South Africa. Found South Africa; from the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gregor

A very unusual quartz encrustation, originally formed over a group of calcite crystals which were subsequently dissolved away leaving the quartz coating retaining the shapes of the original calcite cr

A rare specimen consisting of numerous finely-crystallised anatase crystals encrusting a group of quartz crystals, from Norway, in old white card tray with handwritten label reading: 'Anatase on Quart

. A group of twelve mineral specimens of muscovite (white mica) and quartz crystals on albite, with a specimen of the zeolites stilbite and heulandite on matrix. Private collection, Cambridgeshire, UK

A mixed mineral group comprising: a rich dark blue crystalline mass of sodalite, a concave matrix surface invested with quartz, atacamite and malachite, a rashleighite specimen, and a lustrous white m

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

A mixed mineral group comprising: a limestone matrix with rare blue quartz inclusions, a domed basalt matrix richly covered in green olivine crystals, a powdery limestone matrix carpeted with celestit

Comprising: haematite, quartz, amethyst, aventurine, agate, dalmatian jasper and others. 793 grams total, 18-33 mm (3/4 - 1 1/4 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's

A group of semi-transparent, blocky, yellow-green apatite encrusting quartz, with accessory calcite and a single prismatic quartz crystal, with handwritten note reading:'APATITE, Panasqueriva', Tipex

An unusually fine group of sharply formed, deep green epidote crystals with quartz on a rock groundmass, from the famous Green Monster Mountain locality on Prince of Wales Island, Alaska; in old white

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 mixed group comprising: a galena block from Spain; a celestina block from Sicily; a large scalenahedral calcite crystal from Rumania; a block of cubic octahedral pyrite from Peru. 948 grams total,

A fine cluster of bright and transparent prismatic quartz crystals, still retaining some of the orange iron oxide from their original deposit, in white card tray. See Bonewitz, Dr. Ronald Louis, Rocks

An unusual quartz formation with finely formed crystals intergrown with another mineral, probably albite. From the historic ‘Victorian Museum’ and later collection of Gregory, Bottley & Lloyd (Gre

A group of ten richly coloured pieces of rose quartz. From Brazil; from the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gregory, Bottley & Co.

A very unusual, large, double-terminated fenster smoky quartz, with additional smaller crystals. Some of the hollows are liquid-filled, and have gas bubbles with paper labels pointing to them. Its nam

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]

A group of nine natural quartz crystal pendants with silver-coloured metal caps, each cap mounting three small tourmaline crystals, and one faceted amethyst drop with an electroformed cap, all in plas

Comprising eleven clusters of pseudo-hexagonal twinned crystals. 313 grams total, 28-54 mm (1 1/8 - 2 1/8 in.). From Brazil.Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [11, No

A mixed group of 100 polished mineral 'pebbles'. 1 kg total, 20-34 mm (3/4 - 1 3/8 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [100, No Reserve]

A large, well-formed single crystal of rock crystal quartz. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.219. 752 grams, 14cm (5 1/2"). From the historic ‘Victorian Museum’ a

A group of four aquamarine crystals, all terminated, from Brazil, in old white card tray. From Brazil; from the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd (Gregory's); form

Carboniferous, 359-299 million tears BP. A group consisting of four specimens of stigmaria, the roots of coal forest lycopsid trees such as Sigillaria and Lepidodendron, each with paper label attached