Very Large Cut and Polished Slab of Vintage Blue John

8 5/8 in. (2.5 kg, 22 cm).

A clear, blue, and purple banded unique type of fluorite, only found around the town of Castleton, England. [No Reserve]

Provenance

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

CONDITION

VETTING:

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AUCTIONS:

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LOT 2662