Natural History - Historic 'Australia' Boulder Opal Mineral Specimen

1 5/8 in. (47.4 grams, 43 mm).

Chocolate-brown matrix with vibrant opal inclusions, collection number 411. [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 2564