Blue John - this banded semi-precious stone is a variety of fluorite unique to Derbyshire, UK Its beautiful appearance has led to its extensive use in the carving of decorative objects and jewellery. Today Blue John is quite a rare material with the knon source close to exhaustion.

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Blue John - this banded semi-precious stone is a variety of fluorite unique to Derbyshire, UK Its beautiful appearance has led to its extensive use in the carving of decorative objects and jewellery. Today Blue John is quite a rare material with the knon source close to exhaustion.

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Size: 5000px × 3750px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

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