Natural History - Very Large Septarian Cut and Polished 'Alien Egg' Geode Half

8 in. (3.8 kg, 20.5 cm).

A cut and polished septarian egg half, the centre filled with calcite crystals surrounded by a thin layer of aragonite, the outer layer of grey limestone; a beautiful display piece. [No Reserve]

Provenance

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

CONDITION

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AUCTIONS:

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LOT 1759