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

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AUCTIONS:

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LOT 2570