Natural History - Polished Stone Ball

Comprising: granite from near Harare, Zimbabwe, collection number 587; bornite from North Transvaal, South Africa, collection number 215; citrine from Brazil, collection number 55; schist from Skiathos Island, Greece, collection number 514; a large flint sample from Greenford, Middlesex, collection number 430; chalcopyrite from Cornwall, collection number 4; hemimorphite from Mexico, collection number 27; pyrite from Mexico, collection number 104; azurite and malachite from Mexico, collection number 75. 1.7 kg total, 4.1-12 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. Each specimen accompanied by an original historic index file card.

Each cut section with clusters of purple to lavender coloured crystals. 1.25 kg total, 32-94 mm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).

Displaying large tabular crystals with fine examples if swallow-tail contact twins, collection number 533; purchased for £25.00 from the Natural History Museum Shop, in 1983. 139 grams, 71 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.