Loading, please wait...

Use mousewheel to zoom in and out, click to enlarge

Details

LOT 2570

Natural History - Historic 'Tsumeb, South West Africa' Dioptase on Calcite Crystal Specimen

2 in. (76 grams, 50 mm).

Displaying emerald-green dioptase crystals on a matrix of rhombohedral calcite with some hematite present, collection number 569, with an old Gregory, Bottley & Lloyd label. [No Reserve]

Provenance

Acquired on the UK mineral and fossil market, since 1970.
From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent.

Accompanied by an original historic index file card.

CONDITION

VETTING:

TimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process


AUCTIONS:

TimeLine is a leading auction house specialising in antiquities, ancient art, collectables, natural history, coins, medals, and books. Our auctions offer museums, collectors, historians, and enthusiasts the opportunity to acquire unique and historically significant pieces.

LOT 2570

Natural History - Historic 'Tsumeb, South West Africa' Dioptase on Calcite Crystal Specimen

Sold for (Inc. bp): £39

Print page

RELATED LOTS

  • Natural History - Polished Fossil Goniatite and Orthoceras Stand
    Natural History - Polished Fossil Goniatite and Orthoceras Stand
    Devonian Period, circa 417-354 million years B.P.

    Sold for (Inc. bp): £59

    Set on a textured freestanding matrix and polished to reveal the internal gas chambers. 710 grams, 15.5 cm



    From the Atlas Mountains of Morocco, North Africa. From a Cambridgeshire, UK, collection.

    Lot Details

  • Natural History - Historic Collection of Mineral Specimens
    Natural History - Historic Collection of Mineral Specimens

    Sold for (Inc. bp): £33

    Comprising: cut section of tiger's eye from South Africa, collection number 111; calcite of duftite from Tsumeb, South West Africa, collection number 566; specular hematite on calcite, collection number 300; cut agate geode half from Mexico, collection number 37; andalusite from France, collection number 301; deep brown morion crystal point from Brazil, collection number 97; cut pebble of tiger's eye from North Transvaal, South Africa, collection number 203; calcite from A40 construction works, Middlesex, UK, collection number 509; chalcopyrite from North Transvaal, South Africa, collection number 193. 686 grams total, 3.7-10.8 cm



    Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Eight specimens accompanied by an original historic index file card.

    Lot Details

  • Natural History - Historic Cornwall Bournonite and Arsenopyrite or Sphalerite Mineral Specimen
    Natural History - Historic 'Cornwall' Bournonite and Arsenopyrite or Sphalerite Mineral Specimen

    Sold for (Inc. bp): £52

    Displaying the characteristic 'cog-wheel' shaped twins of bournonite, collection number 420. 135 grams, 62 mm



    Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Accompanied by an original historic index file card and an old Gregory, Bottley & Lloyd label.

    Lot Details

Stay up-to-date with the latest from TimeLine Auctions by joining our mailing list